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j)
{x+2y=3
{y+√2=√2
{x+2y=3
{y=√2-√2
{x+2y=3
{y=0
{x+2*0=3
{y=0
{x+0=3
{y=0
{x=3
{y=0
2x+y=4
x=3
2*3+y=4
x=3
6+y=4
x=3
y=4-6
x = 3
y = -2
b)2x=2
x+y=2
x=2/2
x+y=2
x=1
1+y=2
x=1
y=2-1
x=1
y=1
c) x+1=3
y-x=-1
x=3-1
y-x=-1
x=2
y-2=-1
x=2
y=-1+2
x=2
y=1
d) x-2=-1
2x=y
x=-1+2
2x=y
x=1
y=2*1
x=1
y=2
e) y-x=5
1/2y=4
y-x=5
y=4*2
y-x=5
y=8
8-x=5
y=8
-x=5-8
y=8
-x=-3
y=8
x=3
y=8
f)1/2x+1/3y=3
1/2y+1=4
1/2x+1/3y=3
1/2y=4-1
1/2x+1/3y=3
1/2y=3
1/2x+1/3y=3
y=3*2
1/2x+1/3y=3
y=6
1/2x+1/3 * 6 = 3
y=6
1/2x+2=3
y=6
1/2x=3-2
y=6
1/2x=1
y=6
x=1*2
y=6
x=2
y=6
g)3x+2y=8
3/4y=3
3x+2y=8
y = 3*4/3
3x+2y=8
y=4
3x+2*4=8
y=4
3x+8=8
y=4
3x=8-8
y=4
3x=0
y=4
x=0
y=4
h)x-2y=-10
1/2y-2=3
x-2y=-10
1/2y=3+2
x-2y=-10
1/2y=5
x-2y=-10
y=5*2
x-2y=-10
y=10
x-2*10=-10
y=10
x-20=-10
y=10
x=-10+20
y=10
x=10
y=10
i)2x-y=2
y-1/2=5 1/2
2x-y=2
y=5 1/2 + 1/2
2x-y=2
y=6
2x-6=2
y=6
2x=2+6
y=6
2x=8
y=6
x=8/2
y=6
x=4
y=6
j)x+2y=3
y+√2 = √2
x+2y=3
y = √2-√2
x+2y=3
y=0
x + 2*0 = 3
y=0
x=3
y=0