Answer:
x = 13
Step-by-step explanation:
10 + 5x -4(x - 2) = 31
10 + 5x - 4x + 8 = 31
10 + 8 + 5x - 4x = 31
18 + 1x = 31
-18 -18
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1x = 13
/1 /1
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