230k views
1 vote
Who knows what is the answer?

Who knows what is the answer?-example-1

1 Answer

7 votes
set x=10 as equation 1 and 3x+5y=20 as equation 2

x=10----------(1)
3x+5y=20-----------(2)

substitute (1) into (2),
3(10)+5y=20
30+5y=20
30–20=–5y
10=–5y
5y=–10
y=–10÷5
y=–2

final ans:(10,–2)

User Bbayles
by
7.9k points

No related questions found

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

9.4m questions

12.2m answers

Categories