to subtrct integers ,rewrite as adding opposites and use the rules for addtion of integers..
numbers with Like signs : result Plusnumbers with Unlike signs : result Minus
Adding integers, if they have the same sign, add their absolute values and keep the same sign. Subtracting, change the sign of the 2nd number and the add using rules of addition. Multiplying and dividing, Divide the absolute values, if the signs are the same the answer is positive, if the signs are different the answer is negative.
1. change the subtract to an add and switch the sign of the second. 2. follow rules for addition. -same sign is adding and keep the sign -different sign is subtract and take the sign of the bigger number
ADDING: same sign, add and keep that sign. opposite sides, subtract their absolute values and use the sign of the number with the larger absolute value SUBRTRACTING: change the sign of the subtrahend (2nd number) then ADD using rules above.
To add integers with like signs you jut put the positive in front of the answer (you just add and put a positive sign in front of it)
Rules: Unlike SignsSubtract the absolute value of the number and copy the sign of the number with greater absolute value.
adding1. like sign, add their absalute value & copy the common sign.2. unlike signs. subtruct their absalute value & copy the sing of the bigger number.subtructing1. change the sign of the subrahend (if + change to - & if - change to +)2. then go back to the rules in addition.multiplying & dividing1. likes signs, simply perform the operation then the answer's sign would be (+) positive2. unlike signs, simply perform the operation then the answer's sign would be (-) negative
well, if it is a negative plus a positive, it would be much like subtracting backwards, like this: -4+7=3 or -11+7=-4 also, if it is a positive plus a negative, you subtract 4+(-7)=-3 or 11+(-7)=4
the minus sign is used for subtraction in math. it shows that you are subtracting
The answer will have the same sign as the number with the larger magnitude.