Question

resolva as equaçoes do 1 grau
a)5x+3x=16
b)x+x+8=54
c)7x-2-5x=18
d) 8x=5x+3
e)6x=2x+16
f)5x+4=3x-2x+4
g)x+x-4=17-2x+1
h)5x=50

Answer 1

A) 2

8x=16
x=16/8
x=2

B) 23

2x+8=54
2x=54-8
2x=46
x=46/2
x=23

C) 18

2x-2=18+2
2x=18+2
2x=20
x=20/2
x=10

D) 1

8x-5x=3
3x=3
x=3/3
x=1

E) 4

6x-2x=16
4x=16
x=16/4
x=4

F) 0

5x=3x-2x
5x=x
5x-x=0
4x=0
x=0/4
x=0

G)11/2

2x-4=18-2x
2x+2x=18+4
4x=22
x=22/4
x=11/2

H) 10

x=50/5
x=10