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-20+24x-27x+18=1
-24x+27x=1+20-18
-3x=3 /(-3)
x=-1
b)0=5(8y+3)-12(3y+2)
0=40y+15-36y-24
0-40y+36y=15-24
-4y=-9 /(-4)
y=9/4
y=2 1/4
c)x-4=-2x-4(-3x+5)
x-4=-2x+12x-20
x+2x-12x=-20+4
-9x=-16 /:(-9)
x= 16/9
x= 1 7/9
d)-(x+4)=4x-7(x-2)
-x-4=4x-7x+14
-x-4x+7x=14+4
12x=18 /:12
x=18/12
x=1 6/12
x=1 1/2
e)2x-(2+x)=5(x+1)+5
2x-2-x=5x+5+5
x-2=5x+10
x5x=10+2
-4x=12 /:(-4)
x=- 12/4
x= -3
f)-3(5-2x)-3(3x-2)=8
-15+6x-9x+6=8
-3x=8+15-6
-3x=17 /(-3)
x=-17/3
x=-5 2/3
g)4(2y-1)+(4-6y)=0
8y-4+4-6y=0
8y-6y=4-4
2y=0
y=0
h)5(2x-3)-6x=3(4x-5)+8
10x-15-6x=12x-15+8
10x-6x-12x=-15+8+15
-8x=8 /:(-8)
x=-1
i)3x-2(x-2)=3(x-4)-2(2-3x)
3x-2x+4=3x-12-4+6x
3x-2x-3x-6x=-12-4-4
-8x=-20 /:(-8)
x=20/8
x= 2 4/8
x= 2 1/2
j)4y-6-3y+8+y
4y-3y+y=6-8
2y=-2 /:(-2)
y=-1