The given expression is equivalent to 28.
What is a expression? What is a mathematical equation?
- A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.
- A mathematical equation is used to equate two expressions.
- Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.
We have the following expression -
c - 3y
We have the given expression as -
c - 3y
For c = 7 and y = - 7, we can write -
7 - 3(- 7)
7 + 21
28
Therefore, the given expression is equivalent to 28.
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