Question

find the value of (a) 42+(-33) -20+(67)-(-71)

Answer 1

Answer:

$42 + ( - 33) - 20 + (67) - ( - 71) \\ 42 - 33 - 20 + 67 + 71 \\ 127$

thanks for your time and point

Answer 2

Answer:

51 : 68 = x : 108

17×3 : 17×4 = x : 108

3 : 4 = x : 27×4

3 : 1 = x : 27

x = 27×3

x = 81