If the values of the algebraic expressions 4x + 8 and 3x-7 are opposite to each other, then the value of X is equal to___ ．

From the meaning of the problem, we can get the equation: (4x + 8) + (3x-7) = 0, and the solution is x = - 17

RELATED INFORMATIONS

1. How about 1 / 3 + 1 / 15 + 1 / 35 + 1 / 63 + 1 / 99.1/323
2. Solving cubic equation of one variable: 3x ^ 3 + x ^ 2 = 28
3. Calculation of 19.5-1.9-2.9-3.9 by simple method
4. Find the minimum value of 3x ^ 2 + 6x + 5 / 0.5x ^ 2 + X + 1
5. 479-201 is calculated by a simple method
6. If x > 2m + 1 and the solution set of x > - M-3 is x > 2, then the value of M is A system of inequalities in elementary school
7. How many centimeters is 2 meters
8. X-1 = half x + quarter x + eighth x (find x,
9. Human blood accounts for about one thirteenth of the body weight, and about two-thirds of the blood is water. Mr. Li's weight is 65 kg, and his blood contains about water How many kilos?
10. The number a is 40, which is 10 more than 3 / 5 of the number B. find the number B. (use equation solution)
11. (15 / 32 * 16 / 35 + 1 / 7) / 50% simple calculation!
12. Find the derivative, result and process of the third power + 1 of 2x,
13. When calculating the division with remainder, Xiao careless takes the divisor 126 as 158. The result quotient is larger than the correct result, but the remainder is exactly the same. Would you please write the correct division formula?
14. Is my favorite food right or wrong My hobbies are playing volleyball and tennis Is it right or wrong
15. English words about food and drink The more the better, at least ten, no limit! For example: Bread
16. English words of things I am writing a composition, there is a sentence I do not understand, "can learn a lot of things", this English word I can not, what is the translation of things?
17. Apple banana orange pear
18. How to make fruit salad (I only have apple banana orange pear watermelon chubby sweet salad dressing)
19. Apple, orange, banana, pear
20. There are 45 pears and apples, 35 pears and oranges, and 30 apples and bananas. How many pears, apples and bananas are there?