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7x+28=2x
5x=-28
x=-28/5=-5i3/5
b) 3 (x-2) = 4x-3
3x-6=4x-3
-x=3
x=-3
c) 9 (x-7) = 6 (x-3)
9x-63=6x-18
3x=45
x=15
d) 10 (x-8) =7 (x+4)
10x-80=7x+28
3x=108
x=36
e) 11 (x+3) = 3 (x+2) -6x
11x+33=3x+6-6x
14x=-27
x=-27/14=-1i13/14
f) 12 (x-3) = 4(x+4) -7x
12x-36=4x+16-7x
15x=52
x=3i7/15
g) 10 (x-3) -2x= 6
10x-30-2x=6
8x=36
x=4,5
h) 12 (x+3) -4x = 2x-1
12x+36-4x=2x-1
6x=-37
x=-6i1/6
i) 16 (x-3) = 4x+2
16x-48=4x+2
12x=50
x=4i2/12=4i1/6
j) 10 (x+2) -4x = 3 (x+5)
10x+20-4x=3x+15
3x=-5
x=-5/3