Hei
Here it is
-4-5=-9
-4x(-5)=20
Answer:
2 ??? what is the question
Start by dividing both sides by 5.
This leaves you with y+2/5=-13/5
Subtract 2/5 from both sides to isolate the variable.
y=-15/5 or -3
1 cm = 10 mm so that being said 5 cm would equal to 50 mm
You can compare them mentally! A fraction ia divided into 2 parts, however a decimal is not! Also the strategies you have to use are different. When finding the product/sum/quotient of a fraction you need to find a common denominator. But, with a decimal all you need to do is place the decimals correctly!