Step 1. Ignore the signs. Add them as unsigned numbers.
Step 2. Apply to the result the sign of the given integers
Examples. 2 + 3 is 5; -9 + (-23) is -32.
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Add their magnitudes, and keep the same sign for the sum.
To add two integers with opposite signs . . . -- Ignore the signs, and write the difference between the two numbers. -- Give it the same sign as the larger original number has.
Step 1. Ignore the signs, and subtract the smaller unsigned number from the larger one. If the answer is 0, you're done. Otherwise, do step 2. Step 2. Apply to the answer the sign of the given number with the larger magnitude. For example, 5 + (-2) is 3; 12 + (-23) is -11.
The sum of any two numbers has the same sign as the number with the greater absolute value.
The same way you'd add any other negative numbers. Adding a negative is the same as subtracting, and subtracting a negative is the same as adding. (-2) + (-2) = (-4) (-2) - (-2) = 0 you are wrong if you add or subtract two negitives its always a positive dont you know your math. And the second problem you have is wrong to because when you subtract two negitives you change the sign of the secong number to positive and you change the subtraction sign to a addition sign.