Question

If we add 7 to twice a number, we get 49. Find the number​

Answer 1

Answer:

${x}^{2} + 7 = 49 \\ \\ {x }^{2} = 49 - 7 \\ x = \sqrt{42} .$

Step-by-step explanation:

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Answer 2

Answer:

21

Step-by-step explanation:

let the number be x

Then, 2x+7=49

or, 2x=49-7

or, 2x=42

or, x=42/2

or, x=21