6-4(y-3) = 22
2x+2=4(x-8 )
1. 15z + 3(1-2z)=9z
15z+3-6z=9z
-6z+15z-9z=-3
z=-3
2. 6-4(y-3) = 22
6-4y-12=22
4y=-6+12+22
4y=40
y=10
3. 2x+2=4(x-8 )
2x+2=4x-32
2x-4x=-2-32
-2x=-30
-x=-15 / :(-1)
x=15
Pozdrawiam .
15z +3 - 6z=9z 9z + 3=9z 3=0 rown sprzeczne b)1,6x - 0,8 +1,2 - 1,5x=0 0,1x+0,4=0 0,1x=-0,4 x=-4
6-4(y-3)=22 6-4y+12=22 -4y=22-12-6 -4y=4/:(-4) y=-1
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1. 15z + 3(1-2z)=9z
15z+3-6z=9z
-6z+15z-9z=-3
z=-3
2. 6-4(y-3) = 22
6-4y-12=22
4y=-6+12+22
4y=40
y=10
3. 2x+2=4(x-8 )
2x+2=4x-32
2x-4x=-2-32
-2x=-30
-x=-15 / :(-1)
x=15
Pozdrawiam .
15z +3 - 6z=9z
9z + 3=9z
3=0
rown sprzeczne
b)1,6x - 0,8 +1,2 - 1,5x=0
0,1x+0,4=0
0,1x=-0,4
x=-4
6-4(y-3)=22
6-4y+12=22
-4y=22-12-6
-4y=4/:(-4)
y=-1
2x+2=4(x-8 )
2x+2=4x-32
2x-4x=-2-32
-2x=-30
-x=-15 / :(-1)
x=15