tolong jawab Terimakasih

a. x(x+7)/x(x+3)-28
b. x(x+10)+24/x(3x+7)-20
c. 2(x-6)+1(x-3)
= 2x-12+1x-3
=3x-15
d. 4y(y-2)+3(y²+3y-10)
=4y²-8+3y²+9y-30
=7y²+9y-38
=16y³-38

maaf kLo slh