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Three times of the difference between a number and - 6 is equal to the opposite number of this number. Let this number be x, and the equation can be formulated
3(x+6)=-x
3x+18=-x
3x+x=-18
4x=-18
x=-4.5
RELATED INFORMATIONS
- 1. The 54 books are divided into three groups. Group A's 12 is equal to group B's 13 and group C's 14______ 、______ 、______ Ben
- 2. The 54 books are distributed to three groups. One half of the first group is equal to one third of the second group and one fourth of the third group. The three groups are divided into several books
- 3. Divide 54 books into three groups, one fifth of group A, 25% of group B and half of group C. how many books do group A, B and C get?
- 4. The 54 books are divided into three groups. Group A's 12 is equal to group B's 13 and group C's 14______ 、______ 、______ Ben
- 5. What's a number eight times 30 plus two-thirds of 16
- 6. 8 times of a number plus 3 / 2 of 30 is 16. What's the number
- 7. 8 times of a number plus 2 / 3 of 30 is 16. What's the number?
- 8. The sum of 8 times of a number plus 2 / 3 of 30 is 16. What's the number
- 9. 35% of a number is equivalent to four ninths of 6.3. What's the number (solution of formula)
- 10. Five times the number minus five equals four times the number. List the equations and find the solution
- 11. The sum of two times of a number plus 78 is equal to six times of the number. Find the number (list the equation and find the solution of the equation)
- 12. Equation: x-3 of 65 equals x + 2 of 70
- 13. X plus x minus 30 equals zero What's the X?
- 14. X-30.5 = 3.4x how much is x equal to
- 15. Two times the difference between a number and 1 is equal to the sum of this number and 5. Let this number be x, then the equation is obtained______ ．
- 16. Make the equation according to the following condition: half of the difference between 20% of a number and 15 equals 2
- 17. Half of the difference between 20% of X and 15 is - 2
- 18. Half of the difference between 30 percent of a minus 4 equals 20 percent of a plus 6
- 19. The 30 percent of x minus half of the difference is equal to the 20 percent of x plus 6, and the equation is given
- 20. Given that the lengths of two sides of a right triangle are exactly two of the equation x ^ 2-7x + 12 = 0, then the area of the right triangle is?