Math

Needing help with the formula to be able to prove these answers to be correct. What are the steps ?

Moesha's is ( 3G + 1 ) years old and Shanti is twice Moesha's age.

A ) Find the sum of the ages of Moesha's and Shanti in2 years time.

Answer
The sum of their ages is ( 9g + 7 ) year in 2 years time.

B) How old will Shanti be when Moesha's age is twice her present age?

Answer
Shanti will be ( 9g + 3 ) years old

C) Find how old Moesha's and Shanti we're 4 years ago if g = 5

Answer
Moesha's = 12 years old Shanti = 28 years old.

Thank you :)

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  1. Right now:
    Moesha is (3G+1) years old.
    Shanti is 2(3G+1) or (6G+2).

    A. Sum = ((3G+1)+2) + ((6G+2)+2) = (9G+7) Years.

    B. Diff. = (6G+2) - (3G+1) = (3G+1).
    Shanti = (6G+2) + (3G+1) = (9G+3) Years old.

    C. Moesha = (3G+1)-4 = (3*5+1)-4 = 12 years old.
    Shanti = (6G+2)-4 = ?.

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