Question

Katrina is asked to simplify the expression -3a-4b-2(5a-7b)

@ultrilliam
@vocaloid
@zarkam21

Answer 1

start by distributing this part

2(5a-7b) = ?

Answer 2

(5a - 7b)2?

Answer 3

A(B-C) = A*B - A*C
following the same logic

2(5a-7b) = ?

Answer 4

let's try and dissect
A(B-C) = A*B - A*C

to see what it means

we take the number on the outside, A, and multiply it by the first number on the inside to get

A*B

then we take the number on the outside, A, and multiply it by the second number on the inside, to get

A*C

then the solution becomes

A*B - A*C

Answer 5

applying this logic to
2(5a-7b) = ?

we get

2*5a - 2*7b = ?

Answer 6

where not supposed 2 b solving this were supposed to figure out which property

Answer 7

oh

in that case she would start by ~distributing~ 2(5a-7b) so which property is this?

Answer 8

-3a-4b-2(5a-7b)=-3a-4b-10a+14b

Answer 9

yes, so she ~distributed~ -2(5a-7b), what property is this?

Answer 10

witch property is that ?

Answer 11

~distributed~

Answer 12

= distributive property

Answer 13

the associative property

Answer 14

?

Answer 15

emphasis on the word ""distributed"" = "distributive property"