Question

Please help me if you can. Please also write how you got the answer thank you.

Answer 1

bob is 5

so the answer is 5

Answer 2

Bob is 5

Equation = 2x + 2 = 8

Explanation:

Let's assign some expressions;

Sister = x

Bob = x+2

Bob + Sister = 8

Now, substitute with the expressions:

Bob + Sister = 8 =

x + x + 2 = 8

Now simplify and solve the equation:

2x+2=8

x = 3

Sister = 3, Bob = 5