Peter is 8 years younger than Alex. In 9 years time, the sum of their ages will be 76 . How old is Alex now?
2 answers:
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Answer:
No, Sorry.
Step-by-step explanation:
Since the bases are different, you'll have to change them even if they have a exponent or not. If you dunno how to make the denominators the same, just multiply the two by eachother.
Example) 1/2 - 3/4
Multiply 2 and 4 together, and then multiply the 4 to the one also. Multiply 2 to four and also to the 3.
The subtract from there.
and then Reduce (if needed.)