Question

Construct an equation for the expression: 3 less than 2 times a number is 7. Show the solution to the equation and prove your solution to be true through your work.

Answer 1

2x - 3 = 7

Explanation:

Equation:

2x - 3 = 7

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Solution:

Add 3 to both sides

2x = 10

Divide bothsides by 2

x = 5

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Proof

2x - 3 = 7

plug in x = 5

2(5) - 3 = 7

10 - 3 = 7

7 = 7