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Sphinxa [80]
3 years ago
6

Solve the system of equations 7x - y = -13 and -3x - y = -3 by combining the equations

Mathematics
1 answer:
Arturiano [62]3 years ago
4 0

Answer:

The answer to your question is (-1, 6)

Step-by-step explanation:

Data

                       7x - y = -13               Equation l

                      -3x - y = -3                Equation ll

-Solve equation l for y

                       y = 7x + 13                Equation lll

-Substitute equation lll in equation ll

                      -3x - (7x + 13) = -3

-Solve for x

                     -3x - 7x - 13 = -3

                     -10x = 13 - 3

                     -10x = 10

                          x = 10/-10

                          x = -1

-Substitute x in equation lll

                        y = 7(-1) + 13

                        y = -7 + 13

                        y = 6

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\bf \begin{array}{llll}
h(x)&=&(f\circ g)(x)\\\\
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\end{array}\\\\
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