Elementary Algebra

[jamjam]

I am struggling with this problem.I need to evaluate it.

[1/5 + (1/2)^3 - 3/10] *5^2
I have this and know it is not right.HELP!

1/5 + 1/8 - 3/10 *5^2
4/13 -3/10 * 25

 

[mmm4444bot]

[1/5 + (1/2)^3 - 3/10] *5^2

[1/5 + 1/8 - 3/10] * 5^2 Keep the grouping symbols around the sum of fractions until you've added them together


[4/13 - 3/10] * 25 How did you get 4/13 for 1/5 + 1/8 ?

You did the powers correctly: 5^2 = 25 and (1/2)^3 = 1/8.

We need a common denominator, before combining those three fractions.

Click HERE to refresh your memory on how to combine fractions. See (lessons 10, 11, 12, and 13).