Respuesta :
X+4x+7+3x-x-21
Add the Xs together
X+4x +3x-x = 7x
7-21=-14
The answer is 7x-14
Add the Xs together
X+4x +3x-x = 7x
7-21=-14
The answer is 7x-14
Answer:
7x-14
Step-by-step explanation:
x +(4x + 7) + 3x -(x+21)
7x+7-21
7x-14