Question

. Three students simplified the expression: 2x-3(y- 2x) + (-5)(-2y). Their answers are below. Amber: -4x + 7y Butch: 4x+ 7yCarl: 8x +7yTell who is correct. Explain the error the other students made.

Answer 1

Butch is correct. Amber was incorrect because -6x-2x=(-4x)

She had a positive 4.

Carl was incorrect because he made an error in his subtracting. -3y-(-10y)=7y

Explanation: