Solve by inspection: X+4=15
2 answers:
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.
Explanation:
x+4=15
subtract by 4 both sides of an equation.
x+4-4=15-4
then simplify.
15-4=11
<u><em>x=11 is the final answer. </em></u>
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