Just for reference √ = square root

Question

Evaluate the following expressions:
a) 3√12 - 7√75
b) 1 3/5 + 4/-15
c) -3 + (-5) +3 (-5)
d) 3y+6/4 - y-3/2 = 3y/4

Answer 1

I will do a), the only one with a square root

a)
3√12 - 7√75
= 3(2√3) - 7(5√3) = -29√3

b) and c) are simple arithmetic questions

d) I have a feeling that your question should say
(3y+6)/4 - (y-3)/2 = 3y/4

in any case, multiply each term by 4 and it becomes a simple equation.

Answer 2

but how did you do a? im so confused