Question

Responda...............
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Answer 1

A. A lata tem 60 gramas

$x = 60$

B. A massa do bloco corresponde a 47 gramas

$x + 3 = 50$

$x = 50 - 3$

$x = 47$

C. A massa da lata é 15 gramas

$3x + 20 + 20 = x + 70$

$3x + 40 = x + 70$

$3x - x = 70 - 40$

$2x = 30$

$x = \frac{30}{2}$

$x = 15$