Move 2*N come the left, over previous the =. As soon as you relocate it to the other side, it changes it to a negative.
It i do not care N+5-2*N = 0.
You are watching: Twice a number increased by 5
Now take the 5 and move it end to the right past -2*N, however keep it to the left that the same sign. Because you are maintaining it to the left the the equal sign, it stays a positive number: N-2*N+5 = 0.
Now the you have actually two N’s on the left that the equal sign, we have the right to eliminate similar terms by turning one that them into a 1:
(1-2)*N+5 = 0
Solve the parenthesis (1-2) = -1
Now we have actually -1*N+5 = 0
We can now eliminate the extraneous -1 come get:
-N+5 = 0.
The prize is what negative number can we intake that will take far a optimistic number to same zero?
It would be the straight opposite the itself, bring about N = 5.
To check, input the answer earlier into the equation:
N+5 = 2*N
5+5 = 2*5
10 = 10
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