Question 1095071
(x+x+2+x+4)-18 = x
x+x+2+x+4 = x+18
x+2+x+4 = 18
2x+6 = 18
2x = 12
x = 6
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check:
(6+6+2+6+4)-18 = 6
24 - 18 = 6 correct