6 3 - 20x Mai thinks Tyler's answer is incorrect. She says, " If expressions are equivalent then they are equal for any value of the variable. Why don't you try to substitute the same value for x in all the equations and see where they are not equal?" Where did Tyler
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
Tyler is using the distributive property on the expression 9 - 4 ( 5x - 6 ) . Here is the work:
9 - 4 ( 5x - 6 )
9 + (-4) ( 5x + -6 )
9 + -20x + -6
3 - 20x
Mai thinks Tyler's answer is incorrect. She says, " If expressions are equivalent then they are equal for any value of the variable. Why don't you try to substitute the same value for x in all the equations and see where they are not equal?"
Where did Tyler make an error and how can we correct it?
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