Xiao Ming divides a number by 4 and regards it as multiplying by 4. As a result, her answer is 89. What's the correct answer?

Xiao Ming divides a number by 4 and regards it as multiplying by 4. As a result, her answer is 89. What's the correct answer?

Answer: the correct answer should be 118

Solve the equation: 7 / 2 divided by 4x = 5 / 3 divided by 2 / 3

7/2/4x=5/3/2/3
4x=5/2*2/7
4x=5/7
x=5/28

Solve the equation, 10x = 15 / 23 3 / 4x + 1 / 8 = 7 / 8 x divided by 1 / 8 = 4 / 9
2X minus 2 / 9 = 5 / 6 1 / 4x divided by 2 / 3 = 1 / 6

10x=15/23
x=15/23*1/10
x=3/46
3/4x+1/8=7/8
3/4x=3/4
x=1
X divided by 1 / 8 = 4 / 9
x=4/9*1/8
x=9/2

10x-4x = 9 solution equation

10x-4x = 9 solution equation
6x = 9
X = 3 / 2
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1*2+2*3+3*4+4*5+5*6+6*7+7*8+8*9……… +9999*10000
=

Because K (K + 1) = K & sup2; + K, 1 * 2 + 2 * 3 + 3 * 4 + 4 * 5 + 5 * 6 + 6 * 7 + 7 * 8 + 8 * 9 + 9 * 10 + 10 * 11 '= 1 & sup2; + 1 + 2 & sup2; + 2 + 3 & sup2; + 3 + 4 & sup2; + 4 + 5 & sup2; + 5 + 6 & sup2; + 6 + 7 & sup2; + 7 + 8 & sup2; + 8 + 9 & sup2; + 9 + 10 & sup2; + 10' = 1 & sup2; + 2 & sup2; + 3 & S

1+2+3+4+5+6+7+8+9.+9999+10000

1+2+3+4+5+6+7+8+9.+9999+10000
=(1+10000)*10000/2
=50005000

What's the sum of 8.5 times 1.4 plus 39 divided by 1.5?

8.5*1.4+39/1.5=11.9+26=37.9

What is the quotient of the sum of 4.5 and 5.5 multiplied by 1 / 2 and removed by 5 / 8?
I want the formula!

(5/8)/[（4.5+5.5）*（1/2）]
=(5/8)/5
=1/8

What is the quotient of 0.8 times the difference between 0.375 and 0.25, and the product is calculated by two-thirds

0.8 * (0.375-0.25) / two thirds
=5 / 4 * 1 / 8 * 3 / 2
=One in fifteen

The quotient of the number a divided by 1.8 plus five sixths leads to eight ninths. What's the number a?

The quotient of the number a divided by 1.8 plus five sixths leads to eight ninths. What's the number a?
x / 1.8 + 5/6 = 8/9
x / 1.8 = 8/9 - 5/6 = ( 16-15) /18 = 1/ 18
x = 1.8 /18 = 0.1