Question 1
x -2 =7

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Solution

x -2 = 7
$\Rightarrow x - 2 + 2 = 7 + 2$ [Adding 2 both sides]
$\Rightarrow x = 9$

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Question 177(i)

Find x.
$- {(\frac{1}{7})}^{- 5} \div - {(\frac{1}{7})}^{- 7} = (- 7)^{x}$

Question 177(i)

Find x.
$- {(\frac{1}{7})}^{- 5} \div - {(\frac{1}{7})}^{- 7} = (- 7)^{x}$

Solve: $8 x + 4 = 3 (x - 1) + 7$

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