13x+17y = 15
17x+13y = 45
x+y=?
answer with steps
Answers
Answered by
0
Answer:
30
Step-by-step explanation:
13x +17y = 15
+ 17x +13y = 45
-----------------------------
20x + 20y = 60
20(x+y) = 60
X+y = 30
Answered by
1
Answer:
30
13x + 17y = 15 .....1)
17x + 13y = 45........2)
adding both eqns.
30x + 30y = 60
30(x+y) = 60
x+y= 2
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