Question 191711
7u+v=47
7u=v+57
:
If we solve it, you will know at which coordinates they intersect;
Put the 2nd equation in the standard form also, then add, eliminating v, find u
7u + v = 47
7u - v = 57
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14u = 104
u = {{{104/14}}}
u = {{{52/7}}}
:
Find v using the 1st equation
7{{{52/7}}}) + v = 47
52 + v = 47
v = 47 - 52
v = -5
:
The coordinates are {{{52/7}}}, -5