Answer:
x = 8
Step-by-step explanation:
first you have to subtract 15x from 40x which gives you 25x, then you have to add 120 to 80 which gives you 200, so 25x ÷ 200 = x = 8
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8
40x-120=15x+80
+120 +120
=0 =200
40x=15x+200
-15x -15x
=25 =0
25x=200
200/8=8
