Let the number be x
Twice a number means 2x
7 less than twice a number means 2x-7
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the equation is 2x + 4 = x - 3 solving it yields x = -7
If the number is 'z', then five less than twice the number is ( 2z - 5 ).
Let the number be x 12-2x = -7 -2x = -7-12 -2x = -19 x = 9.5
As an algebraic expression it is: 2x-9
y = 200-7