Rozwiąż i sprawdź równania:
a)2(x+3)=18
b)x+3(x-2)=-22
c)5x-2(x+3)=9
d)4(2x+3)-5x=-3
e)2(x+1)+5x=16
f)-4x-3(2x+1)=7
2x+6=18
2x=12 /:2
x=6
x+3x-6=-22
4x=-16 /:4
x=-4
5x-2x-6=9
3x=15 /:3
x=5
8x+12-5x=-3
3x=-15 /:3
x=-5
2x+2+5x=16
7x=14 /:7
x=2
-4x-6x-3=7
-10x=10 /:(-10)
x=-1
Liczę na naj.
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a)2(x+3)=18
2x+6=18
2x=12 /:2
x=6
b)x+3(x-2)=-22
x+3x-6=-22
4x=-16 /:4
x=-4
c)5x-2(x+3)=9
5x-2x-6=9
3x=15 /:3
x=5
d)4(2x+3)-5x=-3
8x+12-5x=-3
3x=-15 /:3
x=-5
e)2(x+1)+5x=16
2x+2+5x=16
7x=14 /:7
x=2
f)-4x-3(2x+1)=7
-4x-6x-3=7
-10x=10 /:(-10)
x=-1
Liczę na naj.