rozwiąż równania a) 2(x-6)=7b) 7(x-2)-8(x+5)=100c) 3(x-2)=12
a)2x-12=7
2x=7+12
2x=19 /2
x=9 1/2
b)7x-14-8x-40=100
-x=100+40+14
-x=154
x=-154
c)3x-6=12
3x=12+6
3x=18 /3
x=6
a)
2(x-6)=7
2x-12=7
2x=19/:2
x=9,5
b)
7(x-2)-8(x+5)=100
7x-14-8x-40=100
7x-8x=100+14+40
-x=154/:(-1)
c)
3(x-2)=12
3x-6=12
3x=18/:3
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a)2x-12=7
2x=7+12
2x=19 /2
x=9 1/2
b)7x-14-8x-40=100
-x=100+40+14
-x=154
x=-154
c)3x-6=12
3x=12+6
3x=18 /3
x=6
a)
2(x-6)=7
2x-12=7
2x=7+12
2x=19/:2
x=9,5
b)
7(x-2)-8(x+5)=100
7x-14-8x-40=100
7x-8x=100+14+40
-x=154/:(-1)
x=-154
c)
3(x-2)=12
3x-6=12
3x=18/:3
x=6