2x+5x=16, 5x+2y=40 x+y=?
Answers
Answered by
1
I hope answer is helpful for you
Attachments:
Answered by
1
Since 2x+5x=16
7x=16
x=16/7
Therefore,
5×16/7+2y=40
80/7+2y=40
2y=40-80/7
2y=40×7/7-80/7
2y=280/7-80/7
2y=200/7
y=200/14
y=100/7
Therefore,
x+y=16/7+100/7
=116/7
=16.58
HOPE IT HELPS YOU!!!!!
7x=16
x=16/7
Therefore,
5×16/7+2y=40
80/7+2y=40
2y=40-80/7
2y=40×7/7-80/7
2y=280/7-80/7
2y=200/7
y=200/14
y=100/7
Therefore,
x+y=16/7+100/7
=116/7
=16.58
HOPE IT HELPS YOU!!!!!
Similar questions