Question

a) 4 . (5 + 7)
b) -5 . (-3 + 6 - 10)
c) (-10 + 30) : 5
d) (2/5 + 1/3): 3/4

Answer 1

A)

4.(5+7)

4.12

48

B)

-5.(-3+6-10)

-5.(3-10)

-5.-7

35

C)

(-10+30)÷5

20÷5

4

D)

$( \frac{2}{5} + \frac{1}{3}) \div \frac{3}{4} \\ ( \frac{6}{15} + \frac{5}{15} ) \div \frac{3}{4} \\ \frac{11}{15} \div \frac{3}{4 }$