lf 12x+13y=20and13x+12y=30 then x+y=--------
Answers
Answered by
1
Step-by-step explanation:
12x+13y=20
13x+12y=30
------------------
25x+25y=50
divide by 25
x+y=2
Similar questions
Social Sciences,
1 month ago
Social Sciences,
1 month ago
Social Sciences,
2 months ago
Math,
2 months ago
Social Sciences,
9 months ago
Science,
9 months ago