Question

equação do primeiro grau
preciso da conta


a. x+x+2=10

b. 5x=10

c. 9+2+x= 7x +1

Answer 1

a) x+X+2=10
2x=10
x=10/2
x+5


b)5x=10
x=10/5
x=1


c) 9+2+x=7x+1
6x=12
x=12/6
x=2

Answer 2

×+×+2=10
2×=10-2
2×=8=
8÷2×=
4

5×=10
10÷5×=
2

9+2+×=7×+1
×-7×+×=1-9-2
-5×=10
10÷5×=
2