1) 5x-9=3x+1 4)0.8x+16=20+0.7x
5x-3x=1+9 0.8x-0.7x=20-16
2x=10 0.1x=4
x=5 x=40
2)-2y+14=8y-6 5)6*(x-1)=12
-2y-8y=-6-14 6x-6=12
-10y=-20 6x=18
y=2
3)(y+8)*(-7)=14 6)8.9x+17.54=5.4x+2.84
-7y-56=14 8.9x-5.4x=2.84-17.54
-7y=14+56 3.5x=14.7
-7y=70 x=4.2
y=-1
8) x=
7)3*(5-x)+13=4(3x-8)
15-3x+13=12x-32
-3x-12x=-32-15-13
-15x=-60
x=4
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Answers & Comments
1) 5x-9=3x+1 4)0.8x+16=20+0.7x
5x-3x=1+9 0.8x-0.7x=20-16
2x=10 0.1x=4
x=5 x=40
2)-2y+14=8y-6 5)6*(x-1)=12
-2y-8y=-6-14 6x-6=12
-10y=-20 6x=18
y=2
3)(y+8)*(-7)=14 6)8.9x+17.54=5.4x+2.84
-7y-56=14 8.9x-5.4x=2.84-17.54
-7y=14+56 3.5x=14.7
-7y=70 x=4.2
y=-1
8) x=
7)3*(5-x)+13=4(3x-8)
15-3x+13=12x-32
-3x-12x=-32-15-13
-15x=-60
x=4