Question

how to solve : 2y = x + 10
: x + 2y - 6 = 0

Answer 1

isolate x in the first equation to get x=2y-10 and substitute this into the second to get
2y-10+2y-6=0 which simplifies to
4y-16=0
4y=16
y=4

replace that into one of the equations, say the first? and you get

2(4)=x+10
8=x+10
8-10=x
x=-2

Answer 2

how to solve : 3x - y = -2
4x + 2y - 1 = 0

Answer 3

Follow the exact same procedure, isolate a variable in one equation, plug it into the second and solve.

Answer 4

how did you get -10 in the first equation ?

Answer 5

By subtraction 10 from both sides...

Answer 6

ok thanks