Q: Who made the rules for adding and subtracting integers?

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To multiply two integers with different signs, multiply them together as though both were positive and then make the result negative.Examples:-2 x 5 → 2 x 5 = 10, made negative → -10⇒ -2 x 5 = -103 x -4 → 3 x 4 = 12, made negative → -12⇒ 3 x -4 = -12To multiply two integers of the same sign together, ignore the sings and just multiply them as positive numbers.-2 x -5 → 2 x 5 = 10 ⇒ -2 x -5 = 103 x 4 = 12These rules apply to all numbers, not just integers.

4.42 is made into a fraction by saying that 4 is a whole number ,and adding that 42 is out of 100 so your answer is 4 42/100

There are 25 possibilities fitting those rules.

2/3, 3/4, 2/4

There are 24 number made by permutations of the digits. There are lots more if the digits can be repeated, for example, 27335722. Even more can be made by using arithmetic and algebraic operations, for example 35^27 = approx 4.8960*10^41. You have not specified what the rules for "making" numbers are!

Related questions

Say you're adding -2+(-2). Adding negative two is equavilant to subtracting positive two. Both -2+(-2) would be -4. I hope that made sense.

What is a literal coefficient? Expressions are made up of terms joined by adding and subtracting. Terms are made up of numbers and variables multiplied together. In the term 3xy5, 3 is the (numerical) coefficient, and xy5 is the literal coefficient.

Egypt

There are no 4 consecutive integers whose sum is 60. 1+2+3+4=10 2+3+4+5=14 3+4+5+6=18 etc Each step you are adding a number and subtracting a number 4 less than it (eg +5-1, +6-2). So you are adding 4 each time. But 60 does not appear here but 58 and 62 do (sums starting with 13 and 14). Also 60/4=15. so the average of 4 consecutive numbers has to be 15. This average is nowhere odd and so can not be made this way.

Tints of a color are made by adding white.

Made smaller - by subtracting a positive quantity.

the king made the rules

Nobody made them. They are a property of some integers.

Computers are first discovered by early humans. They use stones and sticks in adding or subtracting. Until 300+ BC, Chinese invented the abacus, the first calculator ever made.

Integers is one such set.

Football has changed by adding more rules to the game. The league is trying to cut down on the amount of injuries during the game so they put rules in affect to protect the players. For example, there used to not be a "roughing the passer" or "running into the kicker" penalty but too many injuries happened so they made rules against it.

Congress made the rules and George Washington signed them into law if he thought it was right.