Question

Please help, ASAP!!!
Which expression is equivalent to 5x + 10y - 15?
A.) 5 (x-2y-3)
B.) 5 (x+5y-10)
C.) 5 (x+2y-3)
D.) 5 (x+2y-15)

Answer 1

5(x+2y-3)

You would want to multiply 5 times x keep the x, 2 times 2 keep the y, 5 times -3 keep the negative.

so should look like this.

5x+10y-15

then add 15 to the negative 15 and that will cancel out, add 15 to the 5x

should look like this when you get done doing that.

20x+10y

subtract the 10y from the 10y and it will cancel, subtract the 10y from the 20x and the y will go away.

answer is 10x

if you where to solve the question

5x+10y-15 you would get

10x.

Answer 2

Answer:

the answer is: C.) 5(x+2y-3)

Step-by-step explanation:

5x+10y-15

5x+(2 x 5)y-3 x 5

5( 5x/5 + 2x5y/5 - 3x5/5)

5x/5 is equal to X  = 5(x + 2x5/5 - 3x5/5)

and 2x5/5 is equal to 2 = 5(x + 2y - 3x5/5)

and 3x5/5 is equal to 3 = 5(x+ 2y - 3)

5(x+2y-3)

(this is how I learned it! sorry if it's confusing!)