How do you solve 5( x + 4) = 40?

Oct 14, 2016

$x = 4$

Explanation:

$5 \left(x + 4\right) = 40$

Open the brackets.

$5 x + 20 = 40$

Subtract 20 from each side.

$5 x = 20$

Divide both sides by 5.

$x = 4$

Oct 14, 2016

$x = 4$

Explanation:

Expand:
$5 x + 20 = 40$

Simplify:
$5 x = 40 - 20$

$5 x = 20$

Divide:
$x = \frac{20}{5}$

$x = 4$

Aug 5, 2018

$x = 4$

Explanation:

We can divide both sides by $5$ to get

$x + 4 = 8$

Next, to completely isolate the $x$ term, we can subtract $4$ from both sides to get

$x = 4$

There is another way of going about this, however. We could have just distributed the $5$ on the left to get

$5 x + 20 = 40$

We would subtract $20$ from both sides and divide both sides by $5$, and we would still get $x = 4$.

Hope this helps!