The value of r is -21/9.
The term BODMAS, which stands for brackets of, division, multiplication, addition, and subtraction, might be used to simplify the expression. It specifies how to answer a mathematical expression in a particular order.
-13=r/9+8
-13-8=r/9
-21=r/9
-21/9=r
What is Expressions and Equations?
Algebraic expressions include variables, numbers, and operational signs. Examples include multiplication, division, exponentiation with the natural exponent, addition, and subtraction.
Fractional expression is the name given to division in an algebraic expression with variables.
Rational numbers are those that can be expressed in fractional form.
An algebraic expression is referred to as being irrational if it contains the variable's root or a fractional power with a changeable base.
To learn more about Expressions and Equations refer the above link:
brainly.com/question/723406
#SPJ9
