Question

9r-2(r=3)=5(3r-4)-26

A: r= ?
B: every real number is a solution
C: the equation has no solution

Answer 1

two `=` equal signs ?

Answer 2

9r-2(r+3)=5(3r-4)-26 my bad

Answer 3

\[\huge\rm 9r-2(r+3)=5(3r-4)-26\] is this ur quesiton ?

Answer 4

yeah

Answer 5

oh alright thats fine
1st) distribute parentheses by outside term

Answer 6

\[\huge\rm 9r\color{blue}{-2}(r+3)=\color{ReD}{5}(3r-4)-26\]
distribute (3r-4) by 5
and distribute (r+3) by -2

Answer 7

familiar with the distributive property ?

Answer 8

9r-2r-6=15r-20--26?

Answer 9

nice combine like terms!

Answer 10

it's -26

Answer 11

7r-6=15r+(-46)?

Answer 12

-6=8r+(-46)?

Answer 13

right!

Answer 14

now what?

Answer 15

now move the numbers to the other side of the equal sign

Answer 16

-46 to the left side then solve for r

Answer 17

-40=8r

r=-5

Answer 18

you should take the variables term on one side and number to the opposite side

Answer 19

nvm. that's right!

Answer 20

so is -5 the answer

Answer 21

wait a sec
i have to check it1 more time

Answer 22

i tried -5 and it said it was wrong so that cannot be right lol

Answer 23

would you add or subtract 46 both sides ?

Answer 24

it's already negative on the right side how would you cancel out -46 from right side ?

Answer 25

i added 46 to each side

Answer 26

yes right so -6+46=
???

Answer 27

46 id greater than -6 so sign would be what as a final answer ?

Answer 28

i got -40

Answer 29

no

Answer 30

-6+46 is -40

Answer 31

no

Answer 32

if bigger number is negative `then` answer would be negative
-3+2=-1
3-2=1

Answer 33

do you see the difference ?

Answer 34

ok

Answer 35

so 46 is greater than 6 right ?

Answer 36

yeah

Answer 37

yes so if 46 is positive answer would be positive when you subtract
if 46 is negative then would be negative

-46+6=-40
`but`
46-6=40

Answer 38

ok yeah i made a typo on my calculator

Answer 39

so 5?

Answer 40

yes right

Answer 41

you can check ur answer
substitute x for 5 if you get equal sides then yes 5 is right !

Answer 42

ok it was right, awesome

Answer 43

i mean for r**

Answer 44

thanks a ton

Answer 45

yep:=)
if you replaced r for -5 you wouldn't get the equal sides

Answer 46

my pleasure!! :=)