Question

7x +8y=52. x=10+4y
equacao de 1 grau e 2 incognita

Answer 1

7x +8y=52

7x=52-8y

x=52-8y/7

x=10+4y

10+4y=52-8y/7

70+28y=52-8y

28y+8y=52-70

36y=-18

y=-18/36

y=-1/2

x=10+4y

x=10+4.(-1/2)

x=10-2

x=8

x=8 y=-1/2

espero ter ajudado!