Question 264069
6y+7x=-45
6*7+7X=-45
42+7X=-45
7X=-45-42
7X=-87
X=-87/7
X=-12.43
PROOF:
6*7+7*-12.43=-45
42-87=-45
-45=-45
(-12.43,7) ans.
{{{ graph( 300, 200, -15, 5, -10, 10, -7x/6 -45/6) }}} (graph 300x200 pixels, x from -15 to 5, y from -10 to 10, -7x/6 -45/6).