Question

which expression is equivalent to 18x-54?
A. 18(x-4)
B. 18(x-3)
C. 6(3x-18)
D. 3(9x-27)

Answer 1

Answer:

B. 18(x-3)

Step-by-step explanation:

- You have to find the GCMF of 18x and -54 first.

The GCMF is 18 so put it outside the ( )

• 18( )

- Now ask yourself, 18 multiplied by what gives you 18x? the obvious answer is 18 multiplied by x gives you 18x, so now put the x inside the ( ).

• 18(x )

- Again ask yourself, 18 multiplied by what gives you -54, the answer is -3 so now put -3 inside the ( ) too.

• 18(x-3)
• Remember its negative 3 not positive, so while writing it in the ( ), write -3 not just 3.

Answer 2

The expression equivalent to 18x-54 is B.