Question

5(2+4z)=85

Answer 1

Are we solving for z?

Answer 2

yea

Answer 3

Start with this
\[\huge~\rm~(5)(2)+(5)(4z)=85(Distribute) \]

Answer 4

Whats 5 x 2 = ?

Answer 5

10

Answer 6

\[\huge~\rm~10+(5)(4z)=85(Distribute)\]
whats 5 x 4 = ?

Answer 7

20

Answer 8

\[ \huge~\rm~10+20z=85\]
any ideas on what to do next?

Answer 9

nope

Answer 10

do you add 10+20z

Answer 11

Since we are solving for z we need to subtract 10 from both sides
\[\huge~\rm~10-10+20z=85+10\]

Answer 12

\[\huge~\rm~20z=85+10=?\]

Answer 13

95?

Answer 14

wait we were supposed to subtract 10 >.< sorry!!
85-10=?

Answer 15

75

Answer 16

ok
20z=75
divide both sides by 20
20/20=1 right so that leaves use with z
z=75/20
what is 75/20?

Answer 17

3.75

Answer 18

Yep OR
we can also say z=15/4

Answer 19

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Answer 20

ok thx

Answer 21

:)