Question

3(x + 4) = 21 and check answer​

Answer 1

$\huge \underline \mathbf{Solution}$

$3(x + 4) = 21$

$x + 4 = 21 \div 3$

$x + 4 = 7$

$x = 7 - 4$

$x = 3$

$\huge \underline\mathbf{Check}$

$3(3+ 4)$

$3 \times 7$

$= 21$

LHS = RHS

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