(as mesmas questões?!)
a) 2x = 18 → x = 18/2 → x = 9
b) -6x = -12 → x = -12/-6 → x = 2
c) 3y = 24 → y = 24/3 → y = 8
d) 3x = -6 → x = -6/3 → x = -2
e) 5x = 40 → x = 40/5 → x = 8
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(as mesmas questões?!)
a) 2x = 18 → x = 18/2 → x = 9
b) -6x = -12 → x = -12/-6 → x = 2
c) 3y = 24 → y = 24/3 → y = 8
d) 3x = -6 → x = -6/3 → x = -2
e) 5x = 40 → x = 40/5 → x = 8