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So far, it is known that the following it true:
y = 4x + 2y = 5x
To make the search for the solution easier, I'll assume that this is based on two different equations:
y = 4x + 2y
and
y = 5x
The first equation can be simplified like so:
y - y = 4x + 2y - y
0 = 4x + y
y = -4x
If you use substitution, the fact that y must equal either -4 times a number or 5 times a number can be used to find the following:
5x = -4x
5x + 4x = 0
9x = 0
x = 0
The only answer to this problem is x = 0 (zero).
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∙ 14y ago
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What 4x y14 and 2x y8 solve using substitution?
You cant solve it unless it is an equation. To be an equation it must have an equals sign.
Solve this equation using substitution 3x plus 2y equals 2 and -2 plus y equals 8?
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2
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13 equals negative 4x plus 9?
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