Simplifying the Expression: (5/9)-2 x (3/5)-3x (3/5)0
This expression involves fractions, exponents, multiplication, and subtraction. To solve it, we need to follow the order of operations (PEMDAS/BODMAS):
- Parentheses/Brackets: None in this case.
- Exponents: We have two exponents:
- (5/9)-2: This means (5/9) multiplied by itself twice.
- (3/5)0: Any number raised to the power of 0 equals 1.
- Multiplication and Division (from left to right):
- (5/9)-2: Calculate this first. Remember, a negative exponent means taking the reciprocal.
- -2 x (3/5): Multiply these.
- -3 x (3/5)0: Since (3/5)0 = 1, this simplifies to -3 x 1.
- Addition and Subtraction (from left to right):
- Add and subtract the results of the previous calculations.
Let's break it down step-by-step:
- (5/9)-2 = (9/5)2 = 81/25
- -2 x (3/5) = -6/5
- -3 x (3/5)0 = -3 x 1 = -3
Now, we have:
81/25 - 6/5 - 3
To subtract these fractions, we need a common denominator:
81/25 - 30/25 - 75/25
Finally, we can combine the numerators:
(81 - 30 - 75)/25 = -24/25
Therefore, the simplified expression is -24/25.