Register
Solve using elimination. 8x + 7y = 9 8x + 10y = –18 please help i am in desperate need of math help
115k views
15 votes
Solve using elimination.

8x + 7y = 9
8x + 10y = –18

please help i am in desperate need of math help

User Pepster
by
7.5k points

2 Answers

5 votes

Answer:

x=9, y=-9

Explanation:

pic attached with step by steps

Solve using elimination. 8x + 7y = 9 8x + 10y = –18 please help i am in desperate-example-1
Solve using elimination. 8x + 7y = 9 8x + 10y = –18 please help i am in desperate-example-2
User Kyborek
by
8.2k points
9 votes
8x + 7y = 9
8x + 10y = -18
Subtract.
-3y = 27
Divide.
y = -9
Plug y (-9) back in:
8x - 63 = 9
Solve.
8x = 72
Divide.
x = 9

Answer: (9, -9)
:)
User Chill
by
8.8k 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.

9.5m questions

12.2m answers

Other Questions

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)
Mr. Jacob is 55 years old and tony is 7 years old. in how many years will mr. Jacobs be 4 times as old as Tony
9/10 divided by (1/10 plus 2/5)
Link Copied!