Question

Quero com cálculo e resposta obrg !!

Answer 1

A ) 4x - 3 - x + 8 = 11
4x - x = 11 + 3 - 8
3x = 6
x = 6 ÷ 3
x = 2

B ) 6 ( x - 2 ) = 12
6x -12 = 12
6x = 12 + 12
x = 24 ÷ 6
x = 4

C ) 9 + 2 ( 5x - 4 ) = 21
9 + 10x - 8 = 21
10 x = 21 - 9 + 8
10 x = 21 - 1
x = 20 ÷ 10
x = 2

D ) 10x + 4 ( 3 - 2x ) - 6 = 8
10x + 12 - 8x - 6 = 8
2x = 8 -12 + 6
2x = 2
x = 1