Question

Calculeaza in doua moduri.

A)75•42+75•120
B) 81•(148-59)
C)114•(123+35)
D)342•6-4•342

Answer 1

a) 75 * 42 + 75 * 120 = 3150 + 9000 = 12150
    75(42 + 120) = 75 * 162 = 12150
b) 81 * ( 148 - 59) = 81 * 89 = 7209
    81 * 148 - 81 * 59 = 11988 - 4779 = 7209
c) 114 * (123 + 35) = 114 * 158 = 18012
    114 * 123 + 114 * 35 = 14022 + 3990 = 18012
d) 342 * 6 - 4 * 342 = 2052 - 1368 = 684
    342 * (6 - 4) = 342 * 2 = 684