How to solve the equation x divided by 12-9 = 15?

How to solve the equation x divided by 12-9 = 15?


x÷12-9=15
x÷12=15+9
x÷12=24
x=24×12
x=288



The price of a commodity is reduced by 20% for the first time and by 20% for the second time. How much is the total reduction compared with the original price


1-1×(1-20%)×(1-20%)=36%
A: the total price is 36% lower than the original price



52-x = 3.2 and 91 divided by x = 1.3


52-X=3.2
X=5.2-3.2
X=2
91÷X=1.3
91÷X×X=1.3×X
91=1.3X
1.3X÷1.3=91÷1.3
X=70



1. The price of a commodity is reduced by 20% for the first time and 10% for the second time. The current price is 432 yuan. The original price of this commodity is
1. The price of a commodity is reduced by 20% for the first time and 10% for the second time. The current price is 432 yuan. How much is the original price of this commodity?


Original price = 432 (1-20%) / (1-10%) = 600 yuan



How to write the equation x-35% = 130


X-35%=130
x=130+0.35
x=130.35
You should have given the wrong title
It's x-35% x = 130
So 65% x = 130
X=130÷0.65
X=200



If the original price of the goods is a yuan, the first price reduction is x%, and the second price reduction is y yuan, then the current price is______ Yuan


The price after the first reduction of X%: a (1-x%) yuan, the price after the second reduction: [a (1-x%) - y] yuan, that is (a-ax% - y) yuan



The solution equation: (1) 60% x-35% x = 125; (2) 1-20% x = 14; (3) 12: x = 23:49


(1)60%x-35%x=125        25%x÷25%=125÷25%                x=500;   (2)...



After the price of a commodity is reduced by 1000 yuan, the price is 4000 yuan. How much is the price reduced?


1000 ÷ (4000 + 1000), = 1000 ÷ 5000, = 20%; answer: reduce the price by 20%



(1) Solving equation 1.30% x = 120 2. X + 130% x = 460 3.60% x-35% x = 125 (important process)
Formula calculation
(1) 25% of a number is equal to 20% of 20. What is the number?
(2) A certain number is 15% more than 25% of itself. What's the number?
(3) There are 1000 tons in a batch of goods, 20% of which are transported in the first time and 25% in the second time. What percentage of the remaining goods account for?


(1) Solving the equation
1.30%X=120
0.3x=120
x=400
2.X+130%X=460
2.3x=460
x=200
3.60%X-35%X=125
0.25x=125
x=500
Formula calculation
(1) 25% of a number is equal to 20% of 20. What is the number?
20×20%÷25%
=4÷25%
=16
(2) A certain number is 15% more than 25% of itself. What's the number?
15÷(1-25%)
=15÷0.75
=20
(3) A batch of 1000 tons of goods, the first 20%, the second 25%, the remaining goods accounted for several percent of this batch of goods
1-20%-25%=55%



The current price of a commodity is 1000 yuan, which is 200% lower than the original price?


The original price of 1200 / 1200 has decreased by about 16.7%