Joseph G. answered • 02/23/22
Tutor
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Graduate Student and Substitute Teacher / B.A. in Chemistry (3.85 GPA)
Sum means the product of addition. The sum of a number and 10 is (n + 10) or (x+10)... any variable plus 10. This sum doubled means multiply by 2 so: 2(n +10). This equals 46:
2(n+10) = 46
Solve for n by dividing both sides of the equation by 2, and then subtract 10 from both sides.
