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Question

Solve the following linear equations:
(i)2(32x)=13
(ii)x2=5+x3
(iii)7(x2)=2(2x4)
(iv)3x13=2(x12)+5

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Solution

(i) 2(32x)=13
64x=13
4x=613=7

x=74

(ii) x2=5+x3

x2x3=5
3x2x6=5

x6=5 x=30

(iii) 7(x2)=2(2x4)

7x14=4x8 3x=6

x=2

(iv) 3x13=2(x12)+5

3x=2x1+5+13

x=4+13

x=133


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