He's 22 correct? If you divide his age by 2 (the only even prime number) and add four, you get 15 which is the LCM of 3 and 5

## Answers by Megan K.

How old is Samuel? (answer)

-9x - 13 = -103 (answer)

Hi again Kevin... same process for this question. You want to work to get the x by itself to solve the equation. Start by adding 13 to both sides and remember -103 PLUS 13 = -90... so you get -9x = -90 Next, divide both sides by -9 and you get x = 10

WHEN DO YOU NEED TO USE PEMDAS, DO YOU USE IT EVEN THROUGH YOU DON'T HAVE PARENTHESES OR EXPONENTS (answer)

Incorrect Brian.... the multiplication step clears first before adding or subtracting any numbers.

144 = -12(x+5) (answer)

First, you'll want to distribute the -12 across the parentheses... that will make it 144 = -12x - 60 Second, get the x by itself by adding 60 to both side... that'll make it 204 = -12x Last, divide both sides by -12 ... that'll make it -17 = x