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In algebraic expressions, it is acceptable not to write the coefficient of 1 in front of a variable. This is because the number 1 does not change the value of the variable when multiplied. For example, instead of writing "1x," it is acceptable to write simply "x." This convention helps simplify expressions and make them easier to read and work with.
Oh, dude, when you're dealing with just plain old multiplication, you can totally skip writing that boring old 1. It's like the invisible superhero of math, always there but never seen. So, if you're multiplying a variable by a number or another variable, feel free to leave that 1 out and keep things chill.
Well, honey, you can leave out the 1 in an algebraic expression when it's being multiplied by a variable. For example, instead of writing 1x, you can simply write x. Saves you a bit of time and ink, darling. Just remember, math is all about simplifying and making things easier for yourself.
It is 1 - r/7
The answer is b+1. Therefore the algebraic expression for this is b+1
An algebraic expression is an expression or and equation that contains at least 1 variable
An algebraic expression
You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.