-2 plus 5 equals +3
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x= -.5
2(2*4-5)+6 = 12
Whatever your value of n is, you need to multiply it by 5 and then add 2 to get your answer. Below is how to solve it algebraically: 5n+2 = 0 (it needs to be equal to something in order to solve it, so I assumed that it equals zero) 5n = -2 n = -2/5
This equation is not possible. Two plus three plus four plus five does not equal 287. The system has no solution.
50 + 5 + 2