Rozwiąż równania i wykonaj sprawdzenie.
a) 3(y+6)-y=2(y+9)
b) (x-7)-2(3x+5)=3
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a)3(y+6)-y=2(y+9)
3y+18-y=2y+18
3y-y-2y=18-18
0=0
b)(x-7)-2(3x+5)=3
x-7-6x-10=3
-5x=3+7+10
-5x=20/: -5
x=-4
a)
3(y+6)-y=2(y+9)
2y-2y=18-18
b)
(x-7)-2(3x+5)=3
-5x-17=3
-5x=3+17
-5x=20/:(-5)
SPR:
(-4-7)-2(3*(-4)+5)=3
-11-2(-12+5)=3
-11-2*(-7)=3
-11+14=3
3=3
L=P
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a)3(y+6)-y=2(y+9)
3y+18-y=2y+18
3y-y-2y=18-18
0=0
b)(x-7)-2(3x+5)=3
x-7-6x-10=3
-5x=3+7+10
-5x=20/: -5
x=-4
a)
3(y+6)-y=2(y+9)
3y+18-y=2y+18
2y-2y=18-18
0=0
b)
(x-7)-2(3x+5)=3
x-7-6x-10=3
-5x-17=3
-5x=3+17
-5x=20/:(-5)
x=-4
SPR:
(-4-7)-2(3*(-4)+5)=3
-11-2(-12+5)=3
-11-2*(-7)=3
-11+14=3
3=3
L=P