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...
multiply by 1/38
The reverse, in the sense of undoing the effects of "divide by 21" is "multiply by 21".
divide by 21
10989 * 9 = 98901
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...
Multiply by 36
multiply by 1/38
3 multiply 9 = 27
The reverse, in the sense of undoing the effects of "divide by 21" is "multiply by 21".
divide by 21
- * - = + - * + = - + * + = + - / - = + - / + = - + / + = + *= multiply /=divide
The answer to the question of what can you multiply to 5 to get 9 is 4.
Divide by 622.
1200. Reverse the operation: reverse of divide is multiply, thus 60 x 20 = 1200