Hello,
Let's f the age of the father
s the age of Simran
f=3*s
f-5=4*(s-5)
==>3s-5=4s-20
==>s=15
f=3*15=45
The answer is
13.76 because when u multiply negative times negative it gives u a positive
Answer:3x^2 each coefficient is divisible by 3 and and you can take x^2 from both of them
100+16=116 is the right answer