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Mathematics
Algebra
Linear Equations
-7x-7y= 4690
1 answer
You cannot solve for both x and y with one equation.
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x+y=670
7x+5y=3740 __________ -7x-7y=4690 -2y=-900 y=450 i don't get this at all, can somebody please explain? thanks(:
Top answer:
They multiplied the first equation, which was x+u = 670 by -7 to get -7x - 7y = -4690 (you had 4690,
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my teacher: me:
(1) x+y=670 " ? " (2) 7x+5y=3740 somebody please __________ explain this to me (1) -7x-7y=4690 step by step,
Top answer:
x + y = 670 and 7x + 5y = 3740. With two equations, you have enough information to solve for both x
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