Match the following algebraic equations to the corresponding values of x.

x = 9

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x = 5

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x = 6

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Solution

$i) 4 x + 5 = 25 4 x + 5 - 5 = 25 - 5 4 x = 20 \frac{4 x}{4} = \frac{20}{4} x = 5$

$i i) 80 x - 40 = 440 80 x - 40 + 40 = 440 + 40 80 x = 480 \frac{80 x}{80} = \frac{480}{80} x = 6$

$i i i) 3 x + 8 = 35 3 x + 8 - 8 = 35 - 8 3 x = 27 \frac{3 x}{3} = \frac{27}{3} x = 9$

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