A notebook, a pencil case, and a calculator weigh 600 grams total. The notebook weighs 240 grams and the calculator weighs 265 grams. How much does the pencil case weigh?

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

Idon’t feel like doing the math but you need to do 2.24 divided by 7