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x + 12 = -12
It is simply: x+12
12 more than a 1/2 a number (x) is at most (< or = to) 8. Simplify 12+1/2x is < or = to 8
The number plus sevenIf the "number" is X, then seven more than X is X+7
Suppose the number is x. Then x2 + 12 = 7x So that x2 - 7x + 12 = 0 ie (x - 3)(x - 4) = 0 So the two possible solutions are x = 3 and x = 4