Both and equal . So these two equations equal each other. , , and . Because none of these equations equal , they can’t be equal to .

When you add and together you get . does not equal because . does not equal because . does not equal because .

Both and equal . So these two equations equal each other. , , and . Because none of these equations equal , they can’t be equal to .

When you add and together you get . does not equal because . does not equal because . does not equal because .

Both and equal . So these two equations equal each other. , , and . Because none of these equations equal , they can’t be equal to .

The “” sign means equal to. is equal to .

When adding any number by the only number that will change in your answer is the tens place.

Line up all numbers vertically. Add up the ones column first:

Carry the “10” in 15. Now add the tens place:

The sum is 135.

Line up the numbers so the ones and tens places are aligned.

, carry the

Answer:

To find the sum, you need to add. Line up all numbers vertically. Add up the ones column first:

Carry the “10” in 15. Now add the tens place:

The sum is 125.