Równania
a)
x-5=y
x-1=2(y-1)
b)x=y-5
2x-4=y
a)x-5=y
x-1=2y-2
x-y=5
x-2y=-1 |*(-1)
x-y=5 |+
-x+2y=1 |+
y=6
x-6=5
x=11
x-y=-5 |*(-2)
2x-y=4
-2x+2y=10 |+
2x-y=4 |+
y=14
2x-14=4
2x=18 |:2
x=9
x=y+5
y+5-1=2y-2
y=-2-5+1
y=-6
x=-6+5
x=-1
b)
x=y-5
2(y-5)-4=y
2y-10-4=y
x=14-5
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a)x-5=y
x-1=2(y-1)
x-5=y
x-1=2y-2
x-y=5
x-2y=-1 |*(-1)
x-y=5 |+
-x+2y=1 |+
y=6
x-6=5
x=11
y=6
b)x=y-5
2x-4=y
x-y=-5 |*(-2)
2x-y=4
-2x+2y=10 |+
2x-y=4 |+
y=14
2x-14=4
2x=18 |:2
x=9
y=14
a)
x-5=y
x-1=2(y-1)
x=y+5
x-1=2y-2
x=y+5
y+5-1=2y-2
x=y+5
y=-2-5+1
x=y+5
y=-6
x=-6+5
y=-6
x=-1
y=-6
b)
x=y-5
2x-4=y
x=y-5
2(y-5)-4=y
x=y-5
2y-10-4=y
x=y-5
y=14
x=14-5
y=14
x=9
y=14