lacriner lacriner
  • 04-08-2022
  • Mathematics
contestada

the difference between 2 numbers, a and b is 21. the difference of 5 times a and 2 times b is 18. What are the values of a and b?

Respuesta :

jrtong jrtong
  • 04-08-2022

Answer:

Step-by-step explanation:

a-b=21

5a-2b=18

Using elimination, we have

5a-5b=105

5a-2b=18

So:

3b=-87 so b=-29

Substituting, a=-8

(a,b)=(-8,-29)

Answer Link

Otras preguntas

Did president Truman warn japan against a second bomb attack
What is the value of x?
Factor:(m+2)^2−(m+2)+mn·(n+2)+2n(n+2)
25 POINTS WHOEVER ANSWERS CORRECTLY!!!
which type of market produces the highest level of output at the lowest price to consumers?
Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. At the end of the semester he has
Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate
5 and 6 please help!
Which bulb will lit?
Darren was recently ticketed for speeding over 110 mph on the freeway. When the police officer stopped Darren and asked him why he was going so fast, he replied