The question is asking for the value you will have left if you removes 6 degree Celsius from 15 degree Celsius, that is, 15 - 6 = 9 The answers is 9 degree Celsius. In mathematics, 'LESS' is another word for subtraction.
three bags of potatoes and four cases of corn cost $40. Five bags of potatoes and two cases of corn cost $34. Find the cost of one bag of potatoes and the cost of one case of corn.
Answers
Use variables and set up equations.
Next, get one variable with equal coefficients.
Then get it alone on one side.
Now we can use substitution. Since , substitute for in the other equation and you'll get an equation with just one variable to simplify and solve.