Question

equacao do 1 grau 8x-3y=2 4x+y=10 ?

Answer 1

8x-3y=2
12x+3y=30

20x=32

x=32/20

x=1,6

4.(1,6)+ y = 10

6,4 + y = 10

y= 10 - 6,4

y= 3,6

Answer 2

8x-3y=2+(-2 vezes a segunda linha)
4x+y=10

8x-8x-3y-2y=2-20
-5y=-18
y=18/5

4x+18/5=10
(20x+18)/5=10
20x+18=10·5
20x+18=50
20x=50-18
20x=32
x=32/20=16/10=8/5