Question

determine a raiz ou solução das equaçoes:

Answer 1

a) 5x-3x=10+7
2x=17
x=17 / 2
x= 8,5.

b) 15x+11x=-39-13
26x=-52
x=52 / 26
x= 2.

c) 7x-5x=15-11
2x=4
x=4/2
x=2.

d)7,2x-0,47=0,48+4,8x
7,2x-4,8x=0,48+0,47
2,6x=0,95
x=0,95/2,6
x=0,36.

e) 9x-15x=33-21
-6x=12
x=12/-6
x=-2.

f)2x-x=3,5-0,8
x=2,7.

g) -11x+15x= -16-12
4x= -28
x= -28/4
x= -7.

h) 2x-x=25-23
x=2.