2x-2 plus 5 / 5 of X-1,

RELATED INFORMATIONS

• 1. 5x-7 / 6 + 1 = 2x-1 / 4
• 2. 5x = 3Y, X-Y = 4 write the process of equations, 1 / 2x = - 2 / 3Y, 2x + y = 7 write the process of equations
• 3. How to calculate 4 (2x-1) - 3 (5x + 2) = 3 (2-x)?
• 4. Simplification: [(x ^ 2 + 18x + 72) / (x + 12) - (x ^ 2 + 5x-6) / (x-1)] · (x ^ 3-2x ^ 2-x + 1)
• 5. X + y + Z = 35 2x-y = 5 1 / 3 y = 1 / 2 Z
• 6. Solve the equation x + 1 / X-1 + 1-2x / 2x = 0
• 7. Solving the equation: 2x-1 / 3-10x + 1 / 12 = 2x + 1 / 4 Will increase the reward of wealth
• 8. 3 × 2 + 2x = 12 solution equation
• 9. When doing polynomial multiplication, Xiao Li found that: by using the law of distribution of multiplication to expand the multiplication of polynomials and polynomials, the phenomenon of missing terms may appear after merging the similar terms. Now there is a quadratic trinomial X & # 178; + 2x + 3, which is multiplied by a binomial ax + B, the product does not appear a quadratic term, and the coefficient of the quadratic term is 1, so we can find the value of a and B Why is there no primary term and why is the coefficient of the secondary term 1
• 10. 2﹙10-0.5x﹚=-﹙1.5x-2﹚=?4x+3﹙2x-3﹚=12-﹙x+4）=?
• 11. 5 of 2x 10 5 minus 3 of x 10 4 = 0
• 12. One minus two by three equals x minus one by two
• 13. The total cost of two pieces of clothing is 500 yuan. In order to make a profit, the store owner decides to price the clothing at 50% of the profit and the clothing at 40% of the profit. In actual sales, at the request of customers, the two pieces of clothing are sold at a 10% discount. In this way, the store makes a total profit of 157 yuan. How much is the cost of the two pieces of clothing?
• 14. A store bought 100 a-clock products and 80 B-type products from the wholesale Department of a company. The total cost was 2800 yuan. When the store retailed, the price of each A-type product was increased by 15%, and that of each B-type product was increased by 10%. After all the products were sold, the total income was 3140 yuan. How much was the purchase price of a and B-type products?
• 15. The problem of linear equation with one variable on the first day of junior high school··· When a bicycle is moving at a fixed speed in front of it, there is a car to catch up with. If the speed is 30km / h, it will catch up in one hour; if the speed is 35km / h, it will catch up in 40 minutes to find the bicycle speed
• 16. The problem of "practically solving the equation of one variable and one degree" in grade one of junior high school A shopping mall sells two goods at 99 yuan. One loses 10% and the other makes 10% profit. Is it a loss or a profit for the total price of two goods
• 17. How to solve the engineering problem of linear equation of one variable, encounter problem and so on? In the first semester of junior high school, I taught the linear equation of one variable in mathematics. When I encounter problems like this, I can't find the equivalent relation. What should I do? It's better to send all kinds of formulas of various problems in the second semester of junior high school,
• 18. Teacher. (2x - 2) (x - 1) = 0. The general form is. 2x & # 178; - 2x - 2 = 0
• 19. If - 2x ^ 2-5M + 1 = 0 is a univariate linear equation about X, then M =?
• 20. Read the following process before answering the question: solve equation (X-2) (x + 3) = 6 X-2 = 6, x + 3 = 6, x 1 = 8, x 2 = 3 Please judge whether the above process is correct? If not, please write the correct process