factor the following equation

-30 a - 100 what is the answer

factor the following equation

-30 a - 100 what is the answer

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Woodland Hills, CA

-30 a - 100=

Greatest common factor of terms -30a , 100 is 10

- 30a - 100 = 10 ( 3a - 10) ( 1)

Factoring is opposite of the distributive law

Equation (1) , going from left to right using distributive law, result in a statement of the right side .

Olney, MD

Factor each term separately down to prime numbers:

-30a = **-1*2***3***5***a

-100 = **-1*2***2***5***5

The factors they have in common are shown in orange - so factor them out. The factors in black are what's left of the 30a and 100 after you remove the common factors:

-30-100 = (-1*2*3*5*a) + (-1*2*2*5*5)

BTW, -30a-100 is an algebraic *expression*, not an *equation*. An equation always has an equal sign (=).

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