Question

6. Simplify the expression.
-3(b – 7)

Answer 1

do you know how to distribute the -3 through the parenthesis ?

Answer 2

no

Answer 3

you take the -3 and multiply it by everything in the parenthesis.
what is -3 * b ? and what is -3 * - 7 ?

Answer 4

any idea ?

Answer 5

i dont know what -3 * b is but ido know what -3*-7 is its -10

Answer 6

-3 * b = -3b
-3 * - 7 = 21 (negative times a negative is a positive)

so your answer is : -3b + 21

any questions ?

Answer 7

yes thanks mate one second

Answer 8

we are not adding, we are multiplying, so -3 * -7 = 21

Answer 9

i understand yup

Answer 10

Solve the equation. Check your answer.
m/20 = 5/4

Answer 11

uhm im guessing its cross multiply

Answer 12

m/20 = 5/4 (this is a proportion)
cross multiply
(4)(m) = (20)(5)
can you solve for m now ?