Rozwiąż równania : a) 2 ( x - 1 ) = x - 7 b) 5a - 4 = 4 (a + 2 ) c) 6 ( y + 7 ) = 5 ( y - 2 )
2(x-1)=x-7
2x-2=x-7
x=-7+2
x=-5
5a-4=4
5a=8 / :5
a=8/5
6(y+7) = 5(y-2)
6y + 42 = 5y - 10
y= -52
a) 2(x-1)=x-7
2x-x=2-7
b) 5a - 4 = 4
5a=4+4
5a=8 /:5
a=8/5=1 3/4
c) 6 ( y + 7 ) = 5 ( y - 2 )
6y+35 = 5y-10
6y-5y=-35-10
y+25
Jeśli masz jakieś pytania co do równań to pisz :).
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2(x-1)=x-7
2x-2=x-7
x=-7+2
x=-5
5a-4=4
5a=8 / :5
a=8/5
6(y+7) = 5(y-2)
6y + 42 = 5y - 10
y= -52
a) 2(x-1)=x-7
2x-2=x-7
2x-x=2-7
x=-5
b) 5a - 4 = 4
5a=4+4
5a=8 /:5
a=8/5=1 3/4
c) 6 ( y + 7 ) = 5 ( y - 2 )
6y+35 = 5y-10
6y-5y=-35-10
y+25
Jeśli masz jakieś pytania co do równań to pisz :).