Respuesta :

7x-28+4x=71
11x-28=71
+28  +28
11x=99
/11   /11
x=9
anaguzman
I hope this helps!
Step 1: Simplify both sides of the equation.7(x−4)+4x=71
Simplify:
11x−28=71

Step 2: Add 28 to both sides.
11x−28+28=71+28
11x=99

Step 3: Divide both sides by 11.
11x/11 = 99/11 
so the answer is x=9