Complete the following tasks for this equation: b/7.8 = -2.15

Give an estimate for the solution. Be sure to explain how you arrived at the estimate, either by showing an equation or in words.

Solve the equation. Show or explain your work.

Compared to your estimate, is your answer reasonable? Explain your answer in complete sentence

answer is

c) 4

step-by-step explanation:

50=33x+22

step-by-step explanation:

- (2, -7)

- lines r and s and lines t and u must be parallel

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -