Question

resolva as equações.

a) 4x-6=22

b) 9-x=2x

c) 8+4x=6x-4

d) 3x+1=x+9

e) 4x-11=7-2x

f) 13x+1-10x=5+X

Answer 1

a) 4x-6=22 -> 4x=22+6 -> 4x=28 ->x=28/4 -> x=7

b) 9-x=2x -> 9=2x+x -> 9=3x -> 9/3=x -> 3=x

Answer 2

a) 4x-6=22
4x=22+6
4x=28
x=28/4
x=7
b) 9-x=2x
-x-2x=-9
-3x=-9.(-1)
3x=9
x=9/3
x=3
c) 8+4x=6x-4
4x-6x=-4-8
-2x=-12.(-1)
2x=12
x=12/2
x=6
d) 3x+1=x+9
3x-x=9-1
2x=8
x=8/2
x=4
e) 4x-11=7-2x
4x+2x=7+11
6x=18
x=18/6
x=3
f) 13x+1-10x=5+x
13x-10x-x=5-1
13x-11x=4
2x=4
x=4/2
x=2