Question

Resolva as equações abaixo

a)3x+5=2x-10

b)2x+10=4x+24

c)5x+25=3x-11

d)8x+10=5x-14

e)6x+5=10x+31

Answer 1

a) 3x + 5 = 2x - 10
3x - 2x = - 10 - 5
x = - 15

b) 2x + 10 = 4x + 24
2x - 4x = 24 - 10
- 2x = 14
2x = - 14
x = -14/2
x = - 7

c) 5x + 25 = 3x - 11
5x - 3x = -11 - 25
2x = -36
x = - 36/2
x = -18

d) 8x + 10 = 5x - 14
8x - 5x = -14 - 10
3x = - 24
x = - 24/3
x = -8

e) 6x + 5 = 10x +31
6x - 10x = 31 - 5
- 4x = 26
4x = -26
x = -26/4
x = -13 / 2