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8x+16y=24/*5
3x-5y=-2/*16
40x+80y=120
48x-80y=-32
88x=88/(88)
x=1
8+16y=24
16y=24-8
16y=16/16
y=1
b)
4x-12y=-14
3x+6y=-3/*2
4x-12y=-14
6x+12y=-6
10x=-20/10
x=-2
4*(-2)-12y=-14
-8-12y=-14
-12y=-14+8
-12y=-6/(-12)
y=1/2
c)
2x+2y=4/*2
8x-4y=-2
4x+4y=8
8x-4y=-2
12x=6/12
x=1/2
2*(1/2)+2y=4
1+2y=4
2y=4-1
2y=3/2
y=1.5
d)
5x+10y=5
3x-2y=12
5x=5-10y/5
x=1-2y
3*(1-2y)-2y=12
3-6y-2y=12
-8y=12-3
-8y=9/(-8)
y=-9/8
x=1-2(-9/8)
x=1+18/8
x=3 2/8