Zad 2 str 176 (matematyka z plusem)
podpunkty f i i
prosze jak naj szybciej
f)
2t - (3t +1)=6
i)
(x-7)-2(3x+5)=3
F) 2t-3t-1=6-t=7 // (-1)t = 7I) x-7-6x-10=3-5x = 20 // (-5)x = - 4
f) 2t-(3t+1)=6
2t-3t-1=6 /+1
-t=7 /:(-1)
t=-7
i)(x-7)-2(3x+5)=3
(x-7)-6x-10=3
x-7-6x-10=3
-5x-17=3 /+17
-5x=20 /:(-5)
x=-4
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F) 2t-3t-1=6
-t=7 // (-1)
t = 7
I) x-7-6x-10=3
-5x = 20 // (-5)
x = - 4
f) 2t-(3t+1)=6
2t-3t-1=6 /+1
-t=7 /:(-1)
t=-7
i)(x-7)-2(3x+5)=3
(x-7)-6x-10=3
x-7-6x-10=3
-5x-17=3 /+17
-5x=20 /:(-5)
x=-4