Solve the System of Equations using the substitution method. -5x-3y=16 y=x

1 answer:

8 0

According to the second equation, “x” is equal to “y.” With this knowledge, we can substitute the value “x” into the first equation:

-5x – 3y = 16
-5x – 3(x) = 16

Combine like terms:

-8x = 16

Divide (-8) from both sides of the equation:

x = -2

We have proven that “x” is equal to (-2). Using this knowledge, we can now substitute the known value of “x” into the second equation:

y = x
y = (-2)

We have now proven the values of both X and Y:

x = -2
y = -2

I hope this helps!

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Step-by-step explanation:

If one has a stack of seven books each $2\frac{5}{8} \,\,in$ thick, one should first convert the mixed number to an addition of an integer plus a fraction