Mathematics, 21.08.2019 18:00 amymelvinlove

Ihave a few problems on combining like terms :
1) 12r-8-12
2) n-10+9n-3
3) -4x-10x
4) -r-10r

Answers: 1

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Answers

Combing like terms is actually pretty simple. As long as you can do basic addition, multiplication, division, and subtraction, you should be fine. Like terms are two or more terms that have the same variable(s) -- sometimes like terms can be two or more regular numbers without variables as well. When combing like terms without a variable, just perform the operation as normal (i.e. 2 + 5 = 7). When combing like terms with a variable, perform the operation on the coefficients (i.e. 10x + 5x = (10+5)x = 15x).

1) 12r - 8 - 12
Here the like terms are -8 and 12.
-8 - 12 = -20
12r - 20

2) n - 10 + 9n - 3
Here the like terms are n and 9n and -10 and -3.
To make it easier you can reorder the expression to be n + 9n - 10 - 3.
n + 9n = (1 + 9)n = 10n
-10 - 3 = -13
10n - 13

3) -4x - 10x
Here the like terms are the only two terms in the expression, -4x and -10x.
(-4 - 10)x = -14x
-14x

4) -r - 10r
Here the like terms are the only two terms in the expression, -r and -10r.
(-1 - 10)r = -11
-11r

Answer from: Daruk

$12r-20\\
10n-13\\
-14x\\
-11r$

Answer from: Quest

B. 2 1/2 feet. multiply 2.5 inches by 12 to get thirty inches then divide by 12 to get 2.5 feet

Answer from: Quest

step-by-step explanation: the declaration of the rights of man and of the citizen (french: déclaration des droits de l'homme et du citoyen de 1789), set by france's national constituent assembly in 1789, is a human civil rights document from the french revolution.[1]

the declaration was drafted by the abbé sieyès and the marquis de lafayette, in consultation with thomas jefferson.[2] influenced by the doctrine of "natural right", the rights of man are held to be universal: valid at all times and in every place, pertaining to human nature itself. it became the basis for a nation of free individuals protected equally by the law. it is included in the beginning of the constitutions of both the fourth french republic (1946) and fifth republic (1958) and is still current. inspired by the enlightenment philosophers, the declaration was a core statement of the values of the french revolution and had a major impact on the development of freedom and democracy in europe and worldwide.[3]

the 1789 declaration, together with the 1215 magna carta, the 1689 english bill of rights (1689), the 1776 united states declaration of independence, and the 1789 united states bill of rights, inspired in large part the 1948 united nations universal declaration of human rights

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Ihave a few problems on combining like terms :
1) 12r-8-12
2) n-10+9n-3
3) -4x-10x...

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