Question

Solve by inspection: X+4=15

Answer 1

Step-by-step explanation:

x+4=15

subtract by 4 both sides of an equation.

x+4-4=15-4

then simplify.

15-4=11

x=11 is the final answer.

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Answer 2

x + 4 = 15

- 4 -4

x = 11

You would subtract 4 because you need to isolate the x to get the value of x. You would subtract it to both sides because whatever you do on one side, you have to do it to the other side.