The reverse, in the sense of undoing the effects of "divide by 21" is "multiply by 21".
the reverse would be to divide by 5 or the inverse would be to multiply by 1/5 (both answers are mathematically the same)
multiply by -1...
Divide by 9
multiply by 1/38
The reverse, in the sense of undoing the effects of "divide by 21" is "multiply by 21".
the reverse would be to divide by 5 or the inverse would be to multiply by 1/5 (both answers are mathematically the same)
21 multiply by 10 = 210
multiply by -1...
Divide by 9
Multiply by 36
365 multiply by 24 then multiply that answer by 21 and it is 183960
multiply by 1/38
1 and 21 3 and 7
How about: 3*7 = 21 or 1*21 = 21
- * - = + - * + = - + * + = + - / - = + - / + = - + / + = + *= multiply /=divide
Any number can be multiplied by 21