Denote a sign with △ whose meaning is a △ B = 5A + 4B. Try to calculate the value of (6 △ 4) △ 2 △ 7 Such as the title

It's 382
6 times 5 makes 30, 4 times 4 makes 16, 2 times 5 makes 10, 7 times 4 makes 28
30 plus 16 times 5 is 230, 10 plus 28 times 4 is 152
230 plus 152 is 382

4: 4 out of 7, 51 out of 34

4:4/7
=4÷4/7
=7:1
34/51
=2/3
=2:3

Simplify the following ratio: 34 out of 51

Children, you have to remember what multiples of 17 are, this problem is very simple! 34 / 51 = (2 × 17) / (3 × 17) = 2 / 3

How to simplify 34:51

Both sides are divided by 17, 2:3

51:34 reduction ratio and ratio 8 / 9 reduction ratio and ratio 4

51:34=3:2=1.5
8/9:4=2:9=2/9

15 / 23 * 69 * 4 / 17 * 85

=(15 / 23 * 69) * (4 / 17 * 85)
=45*20
=900

In a division formula, the divisor and quotient are both 17, the maximum remainder is (), and the remainder is ()

I feel that there is a problem in this question. Is the question to be asked the maximum number of remainder, and what is the divisor at this time
The maximum remainder cannot be greater than the divisor, that is, the maximum should be 16, then the divisor is 17 * 17 + 16 = 305

In the division formula where the remainder is 0, the multiplication quotient of the divisor plus the divisor equals 48. What is the divisor?

1) Divisor + divisor x quotient = 48 divisor + divisor = 48 divisor = 242 (divisor + divisor) x quotient = 48 divisor x quotient + divisor = 48 divisor x (quotient + 1) = 4848 = 24x2 divisor = 24 divisor = 24 quotient = 148 = 16x3 divisor = 16 divisor = 8 quotient = 248 = 12x4 divisor = 12 divisor = 4 quotient = 348 = 8x6 divisor

In a division formula with divisor 3, there is no remainder. The sum of divisor and quotient is 448

The first step is to find the quotient in the original formula: 448 * (3 + 1) = 112
The second step is to find the original divisor: 112 * 3 = 336
The third part, the original division formula is: 336 * 3 = 112

A division formula, known divisor and quotient, (no remainder) how to find divisor?
RT

Divisor = divisor / quotient
Do you mean this?

Denote a sign with △ whose meaning is a △ B = 5A + 4B. Try to calculate the value of (6 △ 4) △ 2 △ 7 Such as the title