X-0.52 = 1.3 (solution equation)

X-0.52 = 1.3 (solution equation)

x-0.52=1.3
x=1.3+0.52
x=1.82

If a commodity is sold in season, if the current price is reduced by 10%, it can still make a profit of 200 yuan; if the price is reduced by 20%, it will lose 220 yuan. How much is the current price?
Try, not equations. Units should also write!

(200 + 220) / (20% - 10%) = 4200 yuan
Thinking: the purchase price is fixed. When the current price is reduced by 10%, that is, the principal and interest (interest without price reduction) reduce by 10% of the current price. Similarly, when the current price is reduced by 20%, the principal and interest reduce by 20% of the current price. Compared with the two times of principal and interest, the second time only reduces by 10% of the current price, but the difference is (200 + 220 = 420) yuan, so the current price is 420 / 10% = 4200 yuan

Solution equation (1 / 3) * x + 40% * x + 52 = x + 1 / 6x

[-(1/3)-0.4+1+(1/6)]x=52
0.4333x=52
x=120

If the current price of a commodity is reduced by 10%, it will still make a profit of 200 yuan; if the price is reduced by 20%, it will lose 220 yuan?
Find an equation - preferably not an equation

The current price is (200 + 220) / (20% - 10%) = 4200 yuan
Then the purchase price is 4200 × (1-10%) - 200 = 3580 yuan
So the purchase price is 3580 yuan

The solution equation: 3 / (x-1) - (x + 2) / (x Λ 2-x) = 0
It is [3 / (x-1)] - [(x + 2) / (x Λ 2-x)] = 0

3/(x-1)-(x+2)/x(x-1)=0
Double x (x-1)
3x-(x+2)=0
3x-x-2=0
x=1
When x = 1, the denominator X-1 = 0
It's zenggen, it's renqu
So the equation has no solution

If a commodity is sold in season, if the current price is reduced by 10%, it will still make a profit of 200 yuan; if the price is reduced by 20%, it will lose 220 yuan?

（200+220）÷（20%-10%）
=420÷10%
=4200 yuan
4200 × (1-10%) - 200 = 3580 yuan
A: the purchase price of this product is 3580 yuan

Solution equation: 16 * 8 = 4x
16*8=4x

X=32.
Are you a junior high school student?

If a commodity is reduced by 10% at its current price, it will still make a profit of 200 yuan; if it is reduced by 20%, it will lose 220 yuan. What is the current price of this commodity?

Set the current price X Yuan
X*(1-10%)-200=X*(1-20%)+220
0.9X-200=0.8X+220
0.9X-0.8X=200+220
0.1X=420
X=4200
The current price is 4200 yuan

16 / 4x = 7 (solving equation)

4X = 7 out of 16, is that right?
1 / 4 x = 7
X = 7 / 4
x=7x4
x=28
You can ask if you don't understand! Thank you!
I wish you progress in your study!

If a commodity is sold in season, if the current price is reduced by 10%, the recognized profit will be 200 yuan; if the price is reduced by 20%, the loss will be 220 yuan. How much is the purchase price of this commodity

Current price: (200 + 220) / (1-10% - 1 + 20%) = 4200 yuan
Purchase price: 4200 x (1-10%) - 200 = 3580 yuan