Question

X + y = 10 and x - y = 2 *

Answer 1

Answer:

x = 10 - y = -2+ x

Step-by-step explanation:

Answer 2

Answer:

(6, 4)

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
• Subtract Property of Equality

Algebra I

• Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

x + y = 10

x - y = 2

Step 2: Solve for x

Elimination

1. Combine equations:                    2x = 12
2. Divide 2 on both sides:               x = 6

Step 3: Solve for y

1. Define equation:                     x - y = 2
2. Substitute in x:                        6 - y = 2
3. Isolate y term:                         -y = -4
4. Isolate y:                                  y = 4