Fill in the gap to factorise this expression.
$3 x + 3 = 3 (x +_)$

Answer

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Answer

$3 (x + 1)$ is the factorised expression.

Steps

Step 1 ：Divide both terms on the left side of the equation by 3: $\frac{3 x}{3} = x$ and $\frac{3}{3} = 1$

Step 2 ：Insert the simplified terms into the expression: $3 (x + 1)$

Step 3 ： $3 (x + 1)$ is the factorised expression.