How do you simplify #5(3.4k-7)+(3k+21)#?

1 Answer
Jul 1, 2018

Answer:

#20k - 14#

Explanation:

#5(3.4k-7) + (3k + 21)#

To simplify this, use the distributive property:
cdn.virtualnerd.com

Following this image, we know that:
#color(blue)(5(3.4k-7) = (5 * 3.4k) + (5 * -7) = 17k - 35)#

Put it back into the expression:
#17k - 35 + 3k + 21#

Combine like terms:
#20k - 14#

Hope this helps!