Question

7 ( x – 4) = 2x – 3
i) 3 ( x –2) = 4(3 – x)
j) 3 ( 3x – 1) = 2 ( 3x + 2)
k) 7 ( x – 2 ) = 5 ( x + 3 )
l) 3 (2x – 1) = -2 ( x + 3)
m) 5x – 3( x +2) = 15
n) 2x + 3x + 9 = 8(6 –x)
o) 4(x+ 10) -2(x – 5) = 0
p) 3 (2x + 3 ) – 4 (x -1) = 3
q) 7 (x – 1) – 2 ( x- 5) = x – 5
r) 2 (3 – x ) = 3 ( x -4) + 15

Answer 1

H)7x-28=2x-3
7x-2x=-3+28
5x=25
I)3x-6=12-4x
3x+4x=12+6
7x=18
x=18/7 ou x=2,57142857
J)9x-3=6x+4
9x-6x=4+7
3x=11
x=11/3 ou x=3,66666667
K)7x-14=5x+15
7x-5x=15+14
2x=29
x=29/2 ou x=14,5
L)6x-3=-2x-6
6x+2x=-6+3
4x=-3
x=-3/4 ou x=0,75
M)EU VOU FAZER EM OUTRO COMENTÁRIO
N)2x+3x+9=48-8x
2x+3x+8x=48+9
13x=57
x=57/13 ou x=4,38461538
O)4x+40-2x+10=0
4x=-40-10
4x=-50
x=4/50
x=2/25 ou x=12,5
P)6x+9–4x+4=3
6x-4x=3-9-4
2x=-10
x=-5
Q)7x-7-2x+10=x-5
7x-2x-x=-5+7-10
4x=-8
x=-2
R)6-2x=3x-12+15
2x-3x=-12+15-6
-x=-3
x=3
Espero ter ajudado