Question

resolva as equações por favor aí
a)3x+1=19
b)2x-3=17
c)2.(x+1)+5(x-1)=7
d)4x+11=1
e)5x-14=31
f)6x+14+3x=2x+158-x

Answer 1

a) 3x+1=19
3x=19-1
3x=18
x=18/3
x=6

b)2x-3=17
2x=17+3
2x=20
x=20/2
x=10

c) 2.(x+1)+5(x-1)=7
2x+2+5x-5=7
7x=7+5-2
7x=10
x=10/7

d)4x+11=1
4x=1-11
4x=-10
x=-10/4 (/2)
x=5/2

e) 5x-14=31
5x=31+14
5x=45
x=45/5
x=9

f) 6x+14+3x=2x+158-x
6x+3x-2x+x=158-14
8x=144
x=144/8
x=18

Espero ter ajudado....
:D