Significant Figures Tell me what's wrong. When adding and subtracting, you line up decimal and look for the least decimal places.
0.87
4.061
+10.4

15.331
My answer is 15 but teacher said I'm wrong

Thank You

if you mean hydrogen and oxygen then water is the product

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >