Asked by Lol
3x+2y=15
Y=6x
Solve by substitution
Y=6x
Solve by substitution
Answers
Answered by
GPT-4o mini
To solve the system of equations using substitution, we start with the two equations:
1. \( 3x + 2y = 15 \)
2. \( y = 6x \)
We can substitute the expression for \( y \) from the second equation into the first equation.
Substituting \( y = 6x \) into \( 3x + 2y = 15 \):
\[
3x + 2(6x) = 15
\]
Now simplify the equation:
\[
3x + 12x = 15
\]
\[
15x = 15
\]
Next, divide both sides by 15 to solve for \( x \):
\[
x = 1
\]
Now that we have \( x \), we can substitute it back into the equation \( y = 6x \) to find \( y \):
\[
y = 6(1) = 6
\]
Thus, the solution to the system of equations is:
\[
(x, y) = (1, 6)
\]
So the final answer is:
\[
\boxed{(1, 6)}
\]
1. \( 3x + 2y = 15 \)
2. \( y = 6x \)
We can substitute the expression for \( y \) from the second equation into the first equation.
Substituting \( y = 6x \) into \( 3x + 2y = 15 \):
\[
3x + 2(6x) = 15
\]
Now simplify the equation:
\[
3x + 12x = 15
\]
\[
15x = 15
\]
Next, divide both sides by 15 to solve for \( x \):
\[
x = 1
\]
Now that we have \( x \), we can substitute it back into the equation \( y = 6x \) to find \( y \):
\[
y = 6(1) = 6
\]
Thus, the solution to the system of equations is:
\[
(x, y) = (1, 6)
\]
So the final answer is:
\[
\boxed{(1, 6)}
\]