Question

1°) Calcule o valor das expressões:
a) (7×7+):(18-15:3+5)x2







b) (30-5x6):(7+2x10)x(40-30+5
​

Answer 1

a) (7. 7+): (18-15:3+5) . 2

(49+): (18 -5 +5). 2

49 : 18 . 2

2,7222.... . 2 = 5,444....

b) (30-5.6):(7+2.10).(40-30+5)

(30-30):(7+20).(10+5)

(0):(27).(15)

0.15 = 0