what is the questionswjjbdbfnjr
Answer:
Four times his sister's age would be 4b. his age is two years less, so we need to subtract 2.
put together, this is 4b - 2.
A = 4b
b = 7
a = 28
7 * 4 = 28
Answer:

Step-by-step explanation:
<em>If you just want to simplify -27/x^15, it is not very difficult. Here is the simple way.</em>
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Given the expression

solving



Therefore,

Answer:
the answer will be 86%
Step-by-step explanation:
first you (70x30=2100)
20x62=1240
2100-1240=860
and finally
you say 860÷10=86%