442,482 views
15 votes
15 votes
Solve this system of equations using substitution, show your work (ANSWER QUICK PLEASE)

Solve this system of equations using substitution, show your work (ANSWER QUICK PLEASE-example-1
User Nitish Kumar Pal
by
2.8k points

1 Answer

10 votes
10 votes

Answer:


\boxed{\sf{y=-50 \quad x=3}}

Explanation:

Isolate the term of x and y from one side of the equation.

y=-15x-5 and 11x+y=-17

First, you have to substitute.


\sf{y=-15x-5=11x-15x-5=-17}

Then, you solve.


\sf{-4x-5=-17}

Add by 5 from both sides.

-4x-5+5=-17+5

Solve.

-17+5=-12

-4x=-12

Divide by -4 from both sides.

-4x/-4=-12/-4

Solve.

-12/-4=3

x=3

y=-15*3-5


Solve.

PEMDAS stands for:

  • Parenthesis
  • Exponents
  • Multiply
  • Divide
  • Add
  • Subtract

15*3=45

Rewrite the problem down.

y=-45-5

Solve.

y=-50

Therefore, the correct answer is y=-50 and x=3.

I hope this helps you! Let me know if my answer is wrong or not.

User Homme Sauvage
by
2.7k points