12 plus 63 is 75.
12 minus 63 plus 9 is -42
12 + 15 + 63 + 12 + 24 + 34 + 23 + 15 = 198
63 + (12 x 15) = 63 + 180 = 243
The sum of 63 plus 63 is 126. This can be calculated by adding the two numbers together using the standard addition method, where you add the digits in each place value column starting from the right. In this case, adding the ones column (3 + 3) gives 6, and adding the tens column (6 + 6) gives 12, resulting in the final answer of 126.
6 plus 6 plus 63 plus 63 plus 36 plus 36 is equal to 210.
50 + 63 + 72 + 63 + 137 + 172 = 557
309?
X = √63
8+8+8+8+8+8+8+8=64 or 8*8=64
24 + 63 = 87
If you are meaning 12/63, 3 can go into both (a good trick is to add the digits separately 1+2=3 and 6+3=9, if the answer is a multiple of 3 then 3 goes into it) So therefore 4/21 is 12/63 simplified.
The answer is 262. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.