Question

resolva as expressões numéricas a seguir: A)2.{3+4.[20-(2+3)]-3}:15 B){5+[3.(1+4)]}:4 C)[3+[3.(2²+3)]}:6 por favor alguém me ajudaaaaaa​

Answer 1

Resposta:

A)2×{3+4×[20-(2+3)]-3}:15=

2×{3+4×[20-5]-3}:15=

2×{3+4×15-3}:15=

2×{3+60-3}:15=

2×{63-3}:15=

2×60:15=

120:15=

8

B){5+[3×(1+4)]}:4=

{5+[3×5]}:4=

{5+15}:4=

20:4=

5

C){3+[3×(2²+3)]}:6=

{3+[3×(4+3)]}:6=

{3+[3×7]}:6=

{3+21}:6=

24:6=

4