Question

encuentren el valor de cada incognita

Answer 1

2x - 6= 4x + 2
2x- 4x= 2+6
-2x= 8
x=8/-2
x=-4


b) 5x-7=x+1
5x-x=1+7
4x=8
x=8/4
x=2


c) 4(x-1) + 3(2x-5)=11
4x -4 + 6x -15=11
10x -4 - 15=11
10x - 19=11
10x= 11+19
10x= 30
x=30/10
x=3


d) 2(2-x) + 3(x+4)= 5(2x-4)
4-2x + 3x +12=10x-20
4+x +12=10x-20
x +16=10x -20
x-10x= -20-16
-9x = -36
x= -36/ -9
x= 4


e) 2x - 4/5 = x+2/2
(2) 2x-4 = x+2/2(5)
4x - 8 = 5x+ 10
4x-5x = 10+8
-x= 18
x= 18/-1
x= -18

f) 4x - 1 /3 = 2x + 1/2
(2) 4x - 1 = 2x+1 (3)
8x - 2 = 6x +3
8x -6x = 3+2
2x = 5
x=5/2

g) 3x/5 - x/5=8
2x/5=8
2x= 8•5
2x= 30
x= 30/2
x= 15