Answer:
19
Step-by-step explanation:
7x-7=126
add+7 to 126 and you will get 133
7x/133
x=19
x = 19
7x - 7 = 126
Add 7 to each side
7x - 7+7 = 126+7
7x = 133
Divide each side by 7 to isolate x
7x/7 = 133/7
