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

3 Answers
Oct 14, 2016

#x=4#

Explanation:

#5(x+4)=40#

Open the brackets.

#5x+20=40#

Subtract 20 from each side.

#5x=20#

Divide both sides by 5.

#x=4#

#x=4#

Explanation:

Expand:
#5x+20=40#

Simplify:
#5x = 40-20#

#5x=20#

Divide:
#x=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

#5x+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!