Find the sum.. −3/2 + 8/5
To find the sum of fractions, we need to have a common denominator.
The common denominator for 2 and 5 is 10.
Rewriting the fractions with the common denominator:
-3/2 = -15/10
8/5 = 16/10
Now, we can add the fractions:
-15/10 + 16/10 = 1/10
Therefore, the sum of -3/2 and 8/5 is 1/10.
Evaluate this expression.
7.4 − (−3.7)
To evaluate this expression, we can simply subtract the two numbers:
7.4 - (-3.7)
When subtracting a negative number, we can change it to addition:
7.4 + 3.7
Adding the numbers gives us:
= 11.1
Therefore, the value of the expression 7.4 - (-3.7) is 11.1.
Evaluate this expression.
75.5 − 32.55
To evaluate this expression, we can subtract the two numbers:
75.5 - 32.55
Subtracting the numbers gives us:
= 42.95
Therefore, the value of the expression 75.5 - 32.55 is 42.95.
What is 4−1 1/4+1/2?
To solve this expression, we need to work from left to right using the order of operations.
First, we'll subtract 1 from 4:
4 - 1 = 3
Next, we'll add 1/4 to 3:
3 + 1/4
To add the fractions, we need a common denominator. The common denominator for 4 and 1 is 4.
3 can be rewritten as 12/4:
12/4 + 1/4 = 13/4
Finally, we'll add 1/2 to 13/4:
13/4 + 1/2
To add these fractions, we need a common denominator. The common denominator for 4 and 2 is 4.
13/4 can be rewritten as 26/8:
26/8 + 1/2 = 26/8 + 4/8 = 30/8
The fraction 30/8 can be simplified by dividing the numerator and denominator by their greatest common divisor, which is 2:
30/8 ÷ 2/2 = 15/4
Therefore, the value of the expression 4 - 1 1/4 + 1/2 is 15/4.
What is the value of the expression -17.03 + (-17.204)?
To find the value of the expression -17.03 + (-17.204), we simply add the two numbers:
-17.03 + (-17.204)
When adding two negative numbers, we can change it to subtraction:
-17.03 - 17.204
Subtracting the numbers gives us:
= -34.234
Therefore, the value of the expression -17.03 + (-17.204) is -34.234.
Anna is evaluating some rational expressions. Which THREE are correct?
Responses
A 152 − 200 = −48152 − 200 = −48
B −25 + (−25) = 0−25 + (−25) = 0
C 89 − (−17) = 10689 − (−17) = 106
D 134 − (−16) = 118134 − (−16) = 118
E −39 − (−28) = −11