Question

Exercițiul 13! Vă roggggggg!

Answer 1

a) 531-6 · x = 453
6 · x = 531-453
6 · x = 78
x = 78 ÷ 6
x = 13

b) 14 · x-15 = 13
14 · x = 13 + 15
14 · x = 28
x = 28 ÷ 14
x = 2

c) 12435 · (2 · x-8) = 0
2 · x-8 = 0
2 · x = 8
x = 8 ÷ 2
x = 4

d) 512 ÷ (x + 9) = 16
x+9=512÷16
x+9=32
x=32-9
x=23