Question

3 × + 9 = 18
5 × -2 = 12
$\frac{4?}{?6 } = 13$
$\frac{?z}{?2 } + 2 = 10$
$3 \times = 512$

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Answer 1

Explicación paso a paso:

3x+9=18

3x=18-9

3x=9

X=9÷3

X=3