Explain how 3x+7 equivalent to x+5+2x+2?

3x+7 is equal to x+5+2x+2

Step-by-step explanation:

3x+7 is equal to x+5+2x+2

You can add x and 2x (x+2x) to get 3x

Then you can add 5 and 2 (5+2) to get 7

Therefore 3x+7 is equal to x+5+2x+2

Step-by-step explanation:

on the right side of the equation we can add like terms, meaning adding the x terms with the x terms(that means including their coefficients, in this case that x has a 2 in front of it), and the normal numbers with the other normal numbers. So by simplifying the right side of the equation with the x terms first we have

x+2x=3x

and

5+2=7

Thus we get

3x+7

step-by-step explanation:

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b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )