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-3x-2x= -10
-5x= -10/:(-5)
x=2
b) 2x - 2 = 7 - x
2x+x=7+2
3x=9/:3
x=3
c)10 = 4 - 2x
-2x=10-4
-2x=6/:(-2)
x= -3
d) - (2x - 1) = 4
-2x+1=4
-2x=4-1
-2x=3/:(-2)
x= -1,5
e) 2(x + 1) = x
2x+2=x
2x-x=-2
x= -2
f) 2t - (3t + 1) = 6
2t-3t-1=6
-t=6+1
-t=7/*(-1)
t= -7
g) -(4 +x) = 2(3 - x)
-4-x=6-2x
-x+2x=6+4
x=10
h) 3(y + 6) - y = 2 (y + 9)
3y+18-y=2y+18
3y-y-2y=18-18
0=0
równanie nieoznaczone
i) (x - 7) -2(3x + 5) = 3
x-7-6x-10=3
x-6x=3+7+10
-5x=20/:(-5)
x= -4
liczę na naj
M