Any number equal to x decreased by 6 can be written as "x-6".
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n-6
Let number be x Then x - (-14) = 20 or x + 14 = 20 or x = 20 -14 or x = 6 Verification: 6 - (-14) = 6 + 14 = 20
The number is 18. Let x be the number, The equation is (x-6) * 2 = 24 2(x-6) = 24 2x -12 = 24 2x = 24 + 12 2x = 36 x = 18
Oh, dude, it's like super simple. The algebraic expression for six decreased by a number is just 6 - x. You're literally just taking six and subtracting some mystery number, like a math magician or something. So, yeah, that's it.
x - 13