Question

pfvr gente me ajudem e pra hoje ​

Answer 1

Resposta:

A) $=-25$

B) $=66$

C) $=88$

D) $=8$

E) $=4$

F) $=51$

G) $=27$

H) $=34$

I) $=2$

Explicação passo a passo:

A) $18\div \:2-5\cdot \:6-4$

$=9-5\cdot \:6-4$

$=9-30-4$

$=-25$

B) $240\div \:3+5-19$

$=80+5-19$

$=66$

C) $270\div \:9-3+\left(11+25\cdot \:2\right)$

$=270\div \:9-3+61$

$=30-3+61$

$=88$

D) $\left(640-50\cdot \:8\right)\div \:6-32$

$=240\div \:6-32$

$=40-32$

$=8$

E) $3+\left(16-4\cdot \:3\right)-6\div \:2$

$=3+4-6\div \:2$

$=3+4-3$

$=4$

F) $78\div \:2+\left(9\cdot \:5\right)-33$

$=78\div \:2+45-33$

$=39+45-33$

$=51$

G) $2\left(7-4\right)-12\div \:3+25$

$=2\cdot \:3-12\div \:3+25$

$=6-12\div \:3+25$

$=6-4+25$

$=27$

H) $15+3\cdot \:7-2\cdot \:3+8\div \:2$

$=15+21-2\cdot \:3+8\div \:2$

$=15+21-6+8\div \:2$

$=15+21-6+4$

$=34$

I) $\left(4\cdot \:7+12\right)\div \left(3\cdot \:5+5\right)$

$=40\div \left(3\cdot \:5+5\right)$

$=40\div \:20$

$=2$