3 years ago

Solve the system of equations algebraically. 4x + 5y = 15 - 4x + y = 7

Mathematics

1 answer:

agasfer [191]3 years ago

5 0

Answer:

4x + 5y = 15

-4x + y = 7

6y = 22

y = 22/6 = 11/3

-4x + 11/3 = 21/3

-4x = 10/3

x = -40/3

Step-by-step explanation:

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$\bf \begin{array}{cccccclllll}&\\
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\&\\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\&\\
y&=&{{ k}}&\cdot&x&\\
&\\
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\end{array}& \\\\\\
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