Question

u) 1 (x + 4) = 3 (x + 5)
v) 2 (x - 2) + 5 (2 - x) = (2x + 2)
w) 2 (2x - 1) - 6 (1 - 2x) = 2 (4x - 5)

Answer 1

u) 1 . (x + 4) = 3 . (x + 5)
x + 4 = 3x + 15
x - 3x = 15-4
-2x= -11 .(-1)
2x=11
x=11/2 <---

v) 2.(x-2)+5.(2-x)=(2x+2)
2x-4+10-5x=2x+2
2x-5x-2x=2+4-10
-5x=6-10
-5x= -4 .(-1)
5x=4
x=4/5 <---

w) 2.(2x-1)-6.(1-2x)=2.(4x-5)
4x-2-6+12x=8x-10
4x+12x-8x= -10+2+6
16x-8x= -8+6
8x= -2
x= -2/8
x= -1/4 <---

Answer 2

u) 1 ( x+4 ) = 3 ( x+ 5 )
➡ x+4 = 3x + 15
➡ x-3x = 15 - 4
➡ -2x = 11
➡ x=11 / -2
➡ x= - 5,5#

w) 2 (2x- 1) - 6 ( 1 - 2x) = 2 ( 4x - 5)
➡4x - 2 - 6 + 12x = 8x - 10
➡4x + 12x - 8x = -10 +2 + 6
➡8x = - 2
➡ x= -2 / 8
➡x= - 0,25#

u) 2 (x-2 ) + 5 (2-x) = (2x+2)
➡2x - 4 + 10 - 5x = 2x + 2
➡2x--5x-2x = 2-10+4
➡-5x = -4
➡x= -4 / - 5
➡x= 0,8#