Answer:
502.3
Step-by-step explanation:
You want the solution to the equation ...
(p +2.3)/5.8 = 87
Two-step equation
This equation can be solved in two steps:
1) multiply both sides by 5.8:
p +2.3 = (5.8)(87)
2) subtract 2.3:
p = (5.8)(87) - 2.3 = 502.3
The value of p is 502.3.
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Additional comment
The basic idea in solving equations is to undo what is done to the variable. The "undo" operation is the inverse operation. Addition is undone by subtraction (and vice versa); division is undone by multiplication (and vice versa).
The Order of Operations can give you a clue as to the operations and the sequence required. When you evaluate the expression with the varialbe, here you add 2.3, then divide the sum by 5.8.
These operations are undone in reverse order: first you multiply by 5.8, then you subtract 2.3.
Sometimes, you need to simplify the equation (remove parentheses and combine like terms, for example) before you start. Sometimes you don't.
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