Question

Resolva as equações de 1°grau:

A= 4x-23=55
B=23x-25=10-12x
C=10y-5(2+y) =3(2y-1)-10
D= 15y-2+3y=7

Answer 1

Resposta:

A= 4x-23=55

4x=55+23

4x=78

x=78÷4

X=60,75

B= 23x-25=10-12x

23x+12x=10+25

35x=35

x=35÷35

x=1

C= 10y-5(2+y)=3(2y-1)-10

10y-10-5y=6y-3-10

10y-5y-6y=-3-10+10

-y= -3 .(-1)

Y=3

D= 15y-2+3y=7

15y+3y=7+2

18y=9

y=9÷18

y=0,5

Espero ter ajudado❤