Question

p) 5.(3x-2)=2.(3x+1).
q) 2.(3x-1)+2.(3-x)=0.
r) 7.(x-1)=2.(3x+1)
s) 2.(3-y)+7.(2-y)=15-4y

Answer 1

P)
5.(3x - 2) = 2.(3x+1)
15x - 10 = 6x + 2
15x - 6x = 2 + 10
9x = 12
x =   12   (:3)
       ------
          9   (:3)

x =  4/3

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q)
2.(3x - 1) + 2.(3 - x) = 0 
6x - 2 + 6 - 2x = 0
6x + 4 - 2x = 0
4x + 4 = 0
4x = - 4
x = - 4/4
x = - 1

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r)
7.(x - 1) = 2.(3x + 1)
7x - 7 = 6x + 2
7x - 6x = 2 + 7
x = 9

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s)
2.(3 - y) + 7.(2 - y) = 15 - 4y
6 - 2y + 14 - 7y = 15 - 4y
20 - 9y = 15 - 4y
20 - 15 = - 4y + 9y
5 = 5y
5y = 5
y = 5/5
y = 1