WolfiePurple WolfiePurple
  • 13-04-2020
  • Mathematics
contestada

find r if 3(r - 7) = 4(2 - 2r) + 4

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 13-04-2020

Answer:

r=3

Step-by-step explanation:

3(r - 7) = 4(2 - 2r) + 4

Distribute

3r -21 = 8 -8r +4

Combine like terms

3r -21 = 12 -8r

Add 8r to each side

3r +8r-21 = 12 -8r+8r

11r -21 = 12

Add 21 to each side

11r -21+21 =12+21

11r = 33

Divide each side by 11

11r/11 = 33/11

r = 3

Answer Link
finaualex7 finaualex7
  • 14-04-2020

Answer:

Step-by-step explanation:

3(r - 7) = 4(2 - 2r) + 4

3r+(-21)=8+(-8r)+4

-21+8+4=3r+(-8r)

-9=-5r

Answer Link

Otras preguntas

plz I want answer and I would appreciate it is is a b c or d
Find the equation of line
What is the product of the radical expression. (7-2square root) (8+2 square root)
where is the Niger River?
What is the BEST meaning for obscure in this line from the passage? A) ancient B) dark C) royal D) unknown
A plot of land is shaped like a quadrilateral. Fences are built on the diagonal to divide the area into 4 sections. What is VI to the nearest tenth? GV = 6.55F
two sides of a triangle mesure 20cm and 30cm. What is the measure of the third side
Polygon HH is a scaled copy of Polygon GG using a scale factor of 1/4. Polygon H's area is what fraction of Polygon G's area?
help please????????!!!!!!! asap
What is the volume of this square pyramid?