Question

equação da 1º grau:
a- 5x-13=2x+7
b- 3x+9=5x+3
c- 2x+3=12+3x
d- 9x-2=6x+4

Obs: preciso dos calculos completos

Answer 1

a) 5x-13=2x+7
5x-2x=7+13
3x=20
x=20/3

b) 3x+9=5x+3
9-3= 5x-3x
6=2x
x=3

c) 2x+3=12+3x
x= -9

d) 9x-2= 6x+4
3x=4+2
3x=6
x=6/3
x=2

Answer 2

a)
5x-2x=7+13
3x=20
x=20/3

b)
3x-5x=3-9
-2x=-6 .(-1)
x=6/2
x=3

c)
2x-3x=12-3
-x=9 .(-1)
x=-9

c)
9x-6x=4+2
3x=6
x=6/3
x=2