Question

Solve using the substitution method
3x+5 =y. 3= 2y +x
The x coordinate is ?

Answer 1

3x+5 =y

3= 2(3x+5) +x
3=6x+10+x
3=7x+10

-7=7x

x=-1 :))

Answer 2

$3x+5=y\\ 3=2y+x\\\\ 3=2(3x+5)+x\\ 3=6x+10+x\\ 7x=-7\\ x=-1$