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How so you slove y equals 6x and 2x plus 3y equals -20 by using the system of substitution?
Wiki User
∙ 12y ago
To solve a system of equations using substitution you solve one of the equations for one of the variables then substitute that into the other equation to solve for the other variable.
For example.
y = 6x
2x + 3y = -20
The first equation has already been solved for y. So, you simply substitute that into the second equation.
2x + 3(6x) = -20
2x + 18x = -20
20x = -20
x = -20/20 = -1
Now you have solved for x. You can substitute your answer for x back into the first equation to solve for y.
y = 6x = 6(-1) = -6
Putting it all together...
x = -1
y = -6
Wiki User
∙ 12y ago
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You'd need another equation to sub in
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-2
How would use solve the system of equation x plus 3y equals 23 by using substitution?
You'd need another equation to sub in
Solve this system of equation using substitution 2x plus 6y equals 24 and 3x-2x equals 24?
Solve this system of equation using substitution 2x plus 6y equals 24 and 3x-2x equals 24 ?Improved Answer:2x+6y = 243x-2x = 24 => x =24Substitute the value of x into the top equation to find the value of y:48+6y = 246y = 24-486y = -24y = -4So: x = 24 and y = -4
What is indicated by the occurrence of a false statement such as 0 equals 1 when you solve a system of two linear equations in two variables using substitution?
In that instance, it means that the lines never touch.
What is the answer for the ordered pair form x plus 7y equals 39 3x minus 2y equals 2 using substitution?
If you mean: x+7y = 39 and 3x-2y = 2 Then by substitution: x = 4 and y = 5
Solve using substitution x minus y equals 2 and x plus y equals -4?
-2
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