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2x + 1 = 9 - 2x ile równa się x
2x + 2x = 9 - 1
4x = 8
x = 2
b)
3(2x - 5) = 1 - 4x ile równa się x
6x - 15 = 1 - 4x
6x + 4x = 1 + 15
10x = 16
x = 1,6
c)
4(y- 6) - 3y = 2(y - 9) ile równa się y
4y - 24 - 3y = 2y - 18
y - 2y = -18 + 24
-y = 6
y = -6
2x+1=9-2x
2x+2x=9-1
4x=8 / :4
x=2
b.
3(2x-5)=1-4x
6x-15=1-4x
6x+4x=1+15
10x=16 /:10
x=16/10
x=1 3/5
c.
4(y-6)-3y=2(y - 9)
4y-24-3y=2y-18
4y-3y-2y=-18+24
-x=6 / :(-1)
x=-6