When 345 is added to a number, the number becomes 72 less than 4 times the number. find the number
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The equation should be 7 + 6n = 22
6n=22–7 (the sign of 7 is postive changed to negative when we reciprocate it or 7 is being added to left side and it will subtracted to the right side,signs change when reciprocate or after crossing the equal sign)
6n=15
N=15/6(6 is multiplied to n when reciprocate it will be divided to 15,counterpart of multiplication is division)
N=2.5
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