7-8r=5-7r+3-6

Question

i need the answers

Answer 1

-8x +7 = -7x +5+3-6 . . . (7x-8x)=-7+5+3-6 . . . -x=-5 . . . x=+5

Comments

Your solution is correct, but the variable must be r, not x. 

Answer 2

7 - 8r = 5 - 7r + 3 - 6 (given)

7 - 8r = 2 - 7r (combine similar terms on both sides)

-8r + 7r = 2 - 7 (transpose all terms with variable r to the left side, and constants to the right side)

-r = -5 (combine similar terms on both sides)

r = 5 (multiply both sides by -1)