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6x+12=8+4x-10
6x-4x=8-10-12
2x=-14/2
x=-7
b) 17x+25=3(x+4)
17x+25=3x+12
17x-3x=12-25
14x=-13/14
x=-13/14
a)4+3(3x+9)<4-2(x+5)
4+9x=27<4-2x-10
9x+2x<-6-31
11x<-37/11
x<-37/11
x<-3 4/11
b)2x-7>3(x+10)
2x-7>3x+30
2x-3x>30+7
-x>37/(-1)
x>-37
6x+12=8+4x-10
6x-4x=8-12-10
2x=-14 /:2
x=-7
b) 17x+25=3(x+4)
17x+25=3x+12
17x-3x=12-25
14x=-13 /:14
x= -
a) 4+9x+27<4-2x-10 / +2x-31
11x<-37
x< -
b)2x-7>3(x+10)
2x-7<3x+30 /+7
2x<3x+37 / -3x
-x<37 / ·(-1)
x>37