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If Z = 3, then (9 + 7Z) = [ 9 + 7(3) ] = 9 + 21 = 30

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Q: 9 plus 7z for z equals 3?

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7z+9 = 72 7z = 72-9 7z = 63 z = 9

If I am correct, 9 plus 7 equals 112.

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144 is the answer.2+3=10 which means 2+3=55*2=107+2=63 7+2=99*7=63now 9+7=? 9+7=1616*9=144

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7z+9 = 72 7z = 72-9 7z = 63 z = 9

No! It equals 15, but 9-6=3.

-9 + 3 = -6

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9

-9 + 6 = -3.

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x=3

If I am correct, 9 plus 7 equals 112.

-3+9 is the same as 9-3=6

3 + 9 = 12

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