find ( x + y), if 3x + 5y = 18; 5x + 3y = 22
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Answer:
x+y=5
Step-by-step explanation:
3x+5y=18 ......(i)
5x+3y=22 ......(ii)
adding (i) and (ii) ,we get :
3x+5y=18
5x+3y=22
___________
8x+8y=40
=>8(x+y)=40
=>x+y=40/2
=>x+y=5
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