What’s the answer to
250 = 4(1 - 7x)
1 answer:
Answer:
x = -123/14
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Equality Properties
Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality Step-by-step explanation:
<u>Step 1: Define</u>
250 = 4(1 - 7x)
<u>Step 2: Solve for </u><em><u>x</u></em>
Divide both sides by 4: 125/2 = 1 - 7x Subtract 1 on both sides: 123/2 = -7x Divide -7 on both sides: -123/14 = x Rewrite: x = -123/14
<u>Step 3: Check</u>
<em>Plug in x into the original equation to verify it's a solution.</em>
Substitute in <em>x</em>: 250 = 4(1 - 7(-123/14)) (Parenthesis) Multiply: 250 = 4(1 + 123/2) (Parenthesis) Add: 250 = 4(125/2) Multiply: 250 = 250 Here we see that 250 does indeed equal 250.
∴ x = -123/14 is the solution to the equation.
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X = 2y 2x + 2y = 24 So if x = 2y that means 2x = 4y. Which means that 2x + 2y = 24 can be written as 4y + 2y = 24. Simplified to 6y = 24. Now we need to get 1y so we divide both sides by 6, 6y/6 = y and 24/6 = 4. so y = 4. so x= 2y can be written as x = 8.