Rozwiąż równania . ; )
a) 3(y+2)=5
b) 7(y+3)=5y+2+2y
c) 2(x-1)=3(x+1)-x
d) 3(x+2)-2(3-x)=
proszę o rozpisanie tego xdd. ; **
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a)
3(y+2)=5
3y+6=5
3y=5-6
3y=-1
y=-⅓
b)
7(y+3)=5y+2+2y
7y+21=5y+2+2y
7y-5y-2y=2-21
0≠-19
c)
2(x-1)=3(x+1)-x
2x-2=3x+3-x
2x-3x+x=3+2
0≠5
d)
3(x+2)=2(3-x)
3x+6=6-2x
3x+2x=6-6
5x=0
x=0