Question

podem mi ajudar naessa pergunta

Answer 1

L)= 7x-4-x = -2x +8-3x
= 7x-x+2x+3x = 8+4
= 11x = 12
= x = 12/11

M)= -x-5+4x = -7x+6x+15
= -x+4x+7x-6x = 5+ 15
= 16x = 20
= x = 20/16
= x =5/4

N)= 3x-2x = 3x+ 2
= 3x-2x-3x = 2
= -2x = 2
= x = -2/2
= x = -1

O)= 2-4x = 32-18x+12
= -4x+18x = 32+12-2
= 14x = 42
= x = 42/14
= x = 3

P)= 2x -1 = -3+x+4
= 2x-x = -3+4+1
= x = 2

Q)= 3x-2-2x-3 = 0
= 3x-2x = 2+3
= x = 5

R)= 10-9x+2x = 2x-3
= -9x+2x-2x = -3-10
= -9x = -13
= x = 13/9

S)= 4x-4-5x = -6+90
= 4x-5x = -6+90+4
= -x = 88
= x = -88