Solve, using the substitution method, and check. $\begin{array} { c }
3 x + 4 y = 63 \
x = y
\end{array}$
A) (-63, -63)
B) (10, 10)
C) (14, 9)
D) (6, 6)
E) (9, 9)

Question

Solve, using the substitution method, and check. $\begin{array} { c } 
3 x + 4 y = 63 \
x = y
\end{array}$
A) (-63, -63)
B) (10, 10)
C) (14, 9)
D) (6, 6)
E) (9, 9)

Quizplus · Accepted Answer

Substitute $x = y$ into the first equation: $3x + 4x = 63$ which simplifies to $7x = 63$. Solving for $x$, we get $x = 9$. Since $x = y$, $y = 9$ as well. Thus, the solution is (9, 9).

Solve, Using the Substitution Method, and Check 3x+4y=63x=y\begin{array} { c } 3 x + 4 y = 63 \\x = y\end{array}3x+4y=63x=y​

Solve, Using the Substitution Method, and Check $\begin{array} { c } 3 x + 4 y = 63 \\x = y\end{array}$