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When is 780 seconds 7.8 days
(13 / 60) hours. 1872 hours
Two out of five equals eight out of fifteen
2x/5= 8/15
x=8/15÷2/5
x=8/15*5/2
x=4/3
|2x-7 | - | 3x-8 | less than or equal to 9
1,x≥7/2,
|2x-7|＞0,|3x-8|＞0.
2x-7-3x+8≤9
X ≥ - 8, abandon
2,8/3≤x
2X = 8, x =? How much?
Equal to zero 2x = 8x; - 6x = 0; X = 0
RELATED INFORMATIONS
- 1. If - [+ (- 2x)] = 8, then x is equal to
- 2. 4 [2x-8] is equal to 24.4
- 3. Why is the result equal to 0.80.48
- 4. What is the scale
- 5. Fill in the same number in the brackets to make the equation hold. 0.3 × () × - () 0.25 = 21.15-7 × () 0.3×( )× － ( )0.25＝21.15－7×( )
- 6. -What numbers should be filled in brackets 1,0,4,22, ()
- 7. Fill in the number according to the rule. 0,8,24,48, (), 120
- 8. (1) Fill in the same number in the following two (), the equation holds. 24 × () - () × 15 = 18
- 9. The following questions add appropriate brackets to make the equation hold: 24 + 12 △ 4-1 × 2 = 18, 24 + 12 △ 4-1 × 2 = 30?
- 10. 2.6.4.12.8.18.16.24 fill in the number in order. How do you fill in the following
- 11. Three fifths of a number is 8.5 more than 40% of the number. Find the number Use the comprehensive formula!
- 12. 2.4 of x equals 0.8:3
- 13. 25 times 8 / 7 times 4 times 0.875 is right
- 14. What is 100 plus 200 divided by 25 times 100
- 15. 3/17+x=15/17,x+7/16=13/18,x-4/39=5/13
- 16. What's 20 out of 30 equal to 21?
- 17. )=0.35=21:( )=( )÷80
- 18. Forty three eighths equals thirteen and sixty
- 19. How simple is 35 * 14-70 + 30?
- 20. Calculation with recurrence equation -- ① 1 + 2 +... + 19 + 21 ② 2 + 4 +... + 68 + 70