Hannah is solving the equation3\4x-7=2\3x+8 she add 7 to both sides of the equation to get 2\3x=2\3x+15

First of all, when you added 7 to both sides, you mistakenly changed 3/4x to 2/3x.

I am going to assume you meant to keep it as 3/4x.

Your equation is 3/4x = 2/3x + 15. Subtract 2/3x from both sides.

1/12x = 15. Multiply both sides by 12 to get x alone on one side.

x = 180

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

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