Question

Form 3 linear equation starting with x = 3

Answer 1

Three equations are :
1) 3x=9
2) 4-x=1
3) 2x-6=0

Answer 2

2x+4y=8
x=3
6+4y=8
4y=8-6
y=2/4=1/2=2 or .5

3x-6y=18
x=3
9-6y=18
-6y=12
y=-2