QuestionWhich expression equals $7(1+3)$ ? Options: $7+4$ , $7+21$ , $7+3$ , $1+21$ .

Studdy Solution

STEP 1

Assumptions1. We are given the expression $7(1+3)$ . We need to find an equivalent expression from the given options

STEP 2

First, we need to simplify the given expression. We can do this by using the distributive property of multiplication over addition, which states that $a(b + c) = ab + ac$ .
$7(1+) =7 \times1 +7 \times$

STEP 3

Now, calculate the values of $7 \times1$ and $7 \times3$ .
$7 \times1 =7$ $7 \times3 =21$

STEP 4

Substitute these values back into the expression.
$7(1+3) =7 +21$ So, the expression that is equal to $7(1+3)$ is $7 +21$ .

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