Question

Determine o valor da incógnita nas equações.

•10x - 8 =3x + 6

•5 + 2 (3y - 1) = 7y - 6

Answer 1

10x-8=3x+6
10x-3x=+6+8
7x=14
x=14/7
x=2

5+2(3y-1)=7y-6
7+3y-1=7y-6
3y-7y=-7+1-6
-4y=-12
(-1)* -4y=-12
4y=12
y=12/4
y=3

Answer 2

Olá,

10x-8=3x+6
10x-3x=6+8
7x=14
x=14/7
x=2


5+2(3y-1)=7y-6
5+6y-2=7y-6
6y-7y=-6-5+2
-y=-11+2
-y=-9(-1)
y=9

Espero ter te ajudado!