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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
10-4=-2x
-2x=6 /:(-2)
x=-3
-3x-2x=-10
-5x=-10 /-5
x=2
b)
2x+x=7+2
3x=9 /3
x=3
c)
4-2x=10
-2x=10-4
-2x=6 /-2
x=-3
-5x=-10/:(-5)
x=2
b)2x+x=7+2
3x=9/:3
x=3
c)4-2x=10
-2x=10-4
-2x=6/:(-2)
x=-3