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Robert Recorde, who designed the equals sign, introduced plus and minus in 1557. Brahmagupta was an Indian mathematician who invented the multiplication sign around the 19th century. Johann Rahn first used the division sign in his book Teutshe algebra in 1659.

Q: Who invented the subtraction plus and equal and multiplication and division signs?

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You use the numbers in the wheel and use multiplication. subtraction, addition, or division to equal the number that is outside of the wheel in the top right corner.

Division. Division. Division. Division.

The inverse operation of addition would be subtraction. The inverse operation of subtraction would be addition. The inverse operation of multiplication is division and the inverse operation of division is multiplication. It is called the inverse operation because you are reversing the equation. If you add, subtract, multiply, or divide the same number on each side of the equation, then the equation would still be true. As long as you are doing the same thing on BOTH side of the equation. The reciprocal is used for dividing fractions. All you have to do for finding the reciprocal of a fraction is flip the fraction. Ex: The reciprocal of 1/4 is 4. The reciprocal of 5/8 is 8/5. You can check by multiplying the two fractions. It will equal to one if you did it right. I hope this helped a little bit.

They have equal priority and are evaluated left to right. In fact, the US PEMDAS puts multiplication first whereas the UK BIDMAS puts division first. The only way to reconcile the two is equal priority.

There is only one number that's equal to 81. That number is 81. There are many other sets of two or more numbers that you can manipulate with an arithmetic operation and produce 81 as the result. For example: Addition: 27 + 54 = 81 Subtraction: 175 - 94 = 81 Multiplication: 3 x 27 = 81 Division: 567 / 7 = 81 But none of those other numbers is "equal" to 81.

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"Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction." Therefore multiplication and division are equal.

Mathematically it can vary if addition/subtraction. If it's multiplication/division, then it's always negative.

5 divided by 5, plus 5

8+5=6+7

9*1+8+7=24

5/5 + 5/5 = 2.

(7+8)*8/5=24

(5 divided by 5) + (5 divided by 5) = 2

The operation is P.E.M.D.A.S., and each letter stands for an operation to use. P - parentheses, E - exponents, M - multiplication, D - division (multiplication and division are equal...so it doesn't matter which direction it is in. This is the same for addition and subtraction), A - addition, S - subtraction. I hope this helped :-)

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It's basically the same concept. Like subtraction is the opposite of addition, and division is the opposite of multiplication. Just the reverse. Kind of hard to explain.... ask your teacher!

No, you cannot have subtraction in the associative property of multiplication because the associative property of multiplication is about multiplication. More to the point, if you're asking whether subtraction is associative, the answer is still no. (2 - 3) - 4 does not equal 2 - (3 - 4)