Assuming that you ment- (18*9)/3d where d=3 you would follow PEMDAS-
Parentheses
Exponents
Multiplication-Division (in order from right to left)
Addition-Subtraction (in order from right to left)
1. Parentheses- (18*9)=162
2. Solve your variables- 3d (3*3)=9
Giving you- 162/9
3. Solve-162/9=18
you keep the 2k
so 5(-45)5x is 5 * -45*5 = -1125
the answer is 2k+-1125x
Answer:
a to u
Step-by-step explanation:
Combine like terms to get -4x^2-2x