pstrezze1840
08.12.2020 •
Mathematics
Solve for x. 2(5x+6)=4(2x+5)
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Ответ:
x = 4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define equation
2(5x + 6) = 4(2x + 5)
Step 2: Solve for x
Distribute: 10x + 12 = 8x + 20Subtract 8x on both sides: 2x + 12 = 20Subtract 12 on both sides: 2x = 8Divide 2 on both sides: x = 4Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: 2(5(4) + 6) = 4(2(4) + 5)Multiply: 2(20 + 6) = 4(8 + 5)Add: 2(26) = 4(13)Multiply: 52 = 52Here we see that 52 does indeed equal 52.
∴ x = 4 is a solution of the equation.
Ответ:
(2,-1) and (10,9)
Step-by-step explanation: