Answer:
8
Step-by-step explanation:
Answer:
4x - 9
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
- Terms/Coefficients/Degrees
Step-by-step explanation:
<u>Step 1: Define</u>
5(2x - 1) - 2(3x + 2)
<u>Step 2: Solve for </u><em><u>x</u></em>
- Distribute: 10x - 5 - 6x - 4
- Combine like terms (x): 4x - 5 - 4
- Combine like terms (Z): 4x - 9
<span>4x - y =5
4x + 4y = -4
Change all the signs of the first equation
-4x + y = -5
Add 4x to both sides
y == 4x - 5
Substitute for y in second equation
4x + 4(4x - 5) = -4
4x + 16x - 20 = -4
20x - 20 = -4
Add 20 to both sides
20x = 16
Divide both sides by 20
x = 16/20 === 4/5
Substitute to find y
y == 4x - 5 == 4(4/5) - 5 == 16/5 - 5 = -9/5
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