Question

Solve system of equation by elimination:

Answer 1

Answer:

its b

Step-by-step explanation:

Answer 2

Answer:

a. (4, 1)

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

Algebra I

• Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

-x + 4y = -8

-5x - 4y = -16

Step 2: Solve for x

Elimination

1. Combine equations:                     -6x = -24
2. Isolate x:                                        x = 4

Step 3: Solve for y

1. Define equation:                   -x + 4y = -8
2. Substitute in x:                      -4 + 4y = -8
3. Isolate y term:                       4y = -4
4. Isolate y:                                y = -1