Question

Final solution to the system of equations given below x=-4 5x+4y=-10​

Answer 1

Answer:

(-4, 5/2)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right  

Equality Properties

• Multiplication Property of Equality
• Division Property of Equality
• Addition Property of Equality
• Subtraction Property of Equality

Algebra I

• Coordinates (x, y)
• Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

x = -4

5x + 4y = -10

Step 2: Solve for y

Substitution

1. Substitute in x:                                                                                                5(-4) + 4y = -10
2. Multiply:                                                                                                           -20 + 4y = -10
3. [Addition Property of Equality] Add 20 on both sides:                               4y = 10
4. [Division Property of Equality] Divide 4 on both sides:                                 y = 10/4
5. Simplify:                                                                                                             y = 5/2