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6x-5x=25-30
x= -5
x= -5
6x+30-5x=25
6(-5)+30-5(-5)=25
-30+30+25=25
25=25
..........................................
x-4-3x=-10+6
x-3x-4= -4
-2x= -4+4
-2x=0
x=0
x=0
x-4-3x= -10+6
0-4-3(0)= -4
-4-0= -4
-4= -4
...................................................
3x+2x=8x-15
5x=8x-15
5x-8x= -15
-3x= -15
x= -15/-3
x=5
x=5
3x+2x=8x-15
3(5)+2(5)=8(5)-15
15+10=40-15
25=25
...........................................
-3x+9= -3x2x-8
...........................................
-x-3-5x= -27
-x-5x= -27+3
-6x= -24
x= -24/-6
x=4
x=4
-x-3-5x=27
-(4)-3-5(4)=27
-4-3-20=27
-27= -27
..................................................................
2x-6=3x-36+x
2x-6=3x+x-36
2x-6=4x-36
2x-4x= -36+6
-2x= -30
x= -30/-2
x=15
x=15
2x-6=3x-36+x
2(15)-6=3(15)-36+15
30-6=45-21
24=24