Register
Pls help quick.......
137k views
0 votes
Pls help quick.......

Pls help quick.......-example-1
User Rich Randall
by
7.4k points

1 Answer

5 votes

Answer:

x=1

y=3

Explanation:

21x+7y=42

Dividing by 7 gets us 3x+y=6

-5x+5y=10

Dividing by 5 gets us y-x=2

Subtract the first one from the second one

y-x-3x-y=2-6

-4x=-4

x=1

Substitute x=1 back in

y-1=2

y=3

(1,3)

User Ken Smith
by
7.4k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!