Add −8/15+4/15.
To add -8/15 and 4/15, we simply add the numerators and keep the denominator the same:
(-8 + 4) / 15 = -4/15
Add −1 3/10 +(−4 2/15)
To add -1 3/10 and -4 2/15, we first need to convert the mixed numbers into improper fractions.
-1 3/10 = -10/10 + 3/10 = -13/10
-4 2/15 = -60/15 + 2/15 = -62/15
Now, we can add the fractions:
-13/10 + (-62/15) = (-13*15 + (-62*10)) / (10*15) = (-195 - 620) / 150 = -815/150
To simplify, we can divide both the numerator and denominator by their greatest common divisor, which is 5:
-815/150 = (-163*5) / (30*5) = -163/30
Therefore, -1 3/10 + (-4 2/15) = -163/30.
thats wrong :(
Apologies for the mistake. Let's correct the calculation:
To add -1 3/10 and -4 2/15, we first need to convert the mixed numbers into improper fractions.
-1 3/10 = -10/10 - 3/10 = -13/10
-4 2/15 = -60/15 - 2/15 = -62/15
Now, we can add the fractions:
-13/10 + (-62/15)
To add these fractions, we need to find a common denominator. The smallest common multiple of 10 and 15 is 30. So, we can rewrite the fractions with a common denominator:
-13/10 = -39/30
-62/15 = -124/30
Now, we can add the fractions:
-39/30 + (-124/30) = (-39 - 124) / 30 = -163/30
Therefore, -1 3/10 + (-4 2/15) = -163/30.
Add −1.2+7.6
To add -1.2 and 7.6, simply add the two numbers together:
-1.2 + 7.6 = 6.4
Add −4.85+(−2.54)
To add -4.85 and -2.54, simply add the two numbers together:
-4.85 + (-2.54) = -7.39