Question

Simplify the following expression: 3(3z - 4 ) - (20 z - 5)

Answer 1

first of all expand the brackets:
\[\large{3(3z-4)-(20z-5)=3(3z)-3(4)-20z-(-5)}\]

Answer 2

now we have :
\[\large{9z-12-20z+5}\]

right?

Answer 3

@julialeigh please reply

Answer 4

yeah how exactly did u get the 9z-12-20z+5

Answer 5

what is 3*3z ?

Answer 6

9

Answer 7

where did z go?

Answer 8

after the 9 now the 12

Answer 9

what is 3*x ?

Answer 10

ok got that it would be 3z times that (4) right

Answer 11

then -20z +5.. so it would be 9z-12-20z+5

Answer 12

plz reply

Answer 13

right

Answer 14

sorry for late reply

Answer 15

its ok

Answer 16

how do i simplify that

Answer 17

9z - 20z = -11 z

-12 + 5= -7

so we have :
\[\large{-11z-7}\]

Answer 18

thank you