Question

calcule a parcela desconhecida a) (-128) ÷ × =+4 b)(+24) - × = -76

Answer 1

a) (-128) ÷ × =+4

- 128/x = 4
- 128 = 4x
-128/4 = x
- 32 = x
x = - 32

b)(+24) - × = -76
24 - x = - 76
24 + 76 = x
100 = x
x = 100