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replace b with 7 so you must first multiply -3 by 7 which gives you -21. Subtract 25 more and you get -46, which is the answer.
you test it by giving the letters a value say if X equals 5 and Y equals 7 then you calculate both expressions with that value. If both answers are the same, then the simplified expression is correct, or an equivalent.
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That completely depends on the value of 'x'. Whatever 'x' happens to be at the moment, you must add to this expression an amount equal to triple-x less than 7. In other words, the expression [ 7 - 3x ] must be added.
An equivalent expression.
The value of the expression 8 is always 8, whatever f is.
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7
You can write this as "g - 7". The actual value of this expression, of course, will depend on the value of "g".
5n if n = 7 is 5 x 7, or 35.
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It can also be written as 3x + 7. The value of the expression will depend on the value of x.
If you mean: 4x-14x+7 then the expression can be simplified to 7-10x
The value of that type of expression depends on the value of the variable, in this case, "x".
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