Suppose you start with x.
Twice x is 2x. Three less than that is 2x-3
So 2x-3 = x
Add 3 to both sides: 2x = x + 3
Subtract 1x from both sides: x = 3.
You started with 3.
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Let the number be x Twice a number means 2x 7 less than twice a number means 2x-7
If the number is 'z', then five less than twice the number is ( 2z - 5 ).
As an algebraic expression it is: 2x-9
Oh, dude, so you want me to do some math for you? Alright, let's break it down. Twice the number 50 is 100, right? And 20 less than 100 is 80. So, 20 less than twice the number 50 is 80. Boom, math wizard right here!
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