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Four students are asked to solve 5(x-3)=2x+6 and explain their steps. Which solution and explanation is correct

User Juniar
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1 Answer

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Final answer:

The solution for the given equations 5(x-3) = 2x + 6 is x=7.

Step-by-step explanation:

To solve the equation 5(x-3) = 2x + 6, follow these steps:

Distribute the 5 into the parentheses: 5 * x - 5 * 3 = 2x + 6

Which simplifies to 5x - 15 = 2x + 6

Eliminate terms wherever possible to simplify the algebra.

Subtract 2x from both sides: 5x - 2x - 15 = 6

Which simplifies to 3x - 15 = 6

Add 15 to both sides to isolate the term with the variable:

3x - 15 + 15 = 6 + 15

Which simplifies to 3x = 21

Divide both sides by 3 to solve for x:

3x/3 = 21/3

Which gives us x = 7

Check the answer to see if it is reasonable by substituting back into the original equation: 5(7-3) = 2*7 + 6, which indeed simplifies to 5*4 = 14 + 6, and further to 20 = 20, confirming our solution is correct.

Therefore, the solution for the given equations is x=7.

User Rehumbus
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