Question

a) X + 8 = - 1
b) 3 x - 5 = 4
c) 2+4 x = x - 7
d) 3 ( x - 2 ) = x + 7
e) 4 ( x - 5 ) = 2 ( x + 3)
f) x/4 - 1/3 = x/2 + 4/3

Answer 1

a) x +8 = -1
x = -1 - 8
x= -9

b) 3x - 5 = 4
3x = 4 + 5
3x = 9
x = 9/3 → x = 3

c) 2 + 4x = x - 7
4x - x = -7 -2
3x = -9
x = -9/3 → x = -3

d) 3 ( x -2 ) = x + 7
3x - 6 = x + 7
3x -x = 7 + 6
2x = 13
x = 13/2 → x = 6,5

e) 4 ( x - 5 ) = 2 ( x + 3)
4x -20 = 2x + 6
4x - 2x = 6 + 20
2x = 26
x = 26/2 → x = 13