FInd the value of variable in the following equation (i) 3m + 7 = 22 (ii) r - 11 = 58

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Solution

Given equations i) 3m+7=22 ii)r-11=58
i) $3 m + 7 = 22 \Rightarrow 3 m = 22 - 7$
$3 m = 15$
$\Rightarrow m = \frac{15}{3} = 5$
$m = 5$
ii) $r - 11 = 58 \Rightarrow r = 11 + 58$
$r = 69$
$r = 69$

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