One third of a number minus one fourth equals seven. What's the number?

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• 1. 3 / 4 equals 8 / 4 () equals 9 / 4 equals 12 / 4
• 2. How to simplify 57:19
• 3. What is 30 ° 12'8 ″ - 18 ° 40'12 ″
• 4. How much is 147 times 300%?
• 5. The numbers in the brackets are equal to 100 The key is how 9 comes from. It's better to have a formula
• 6. There are n natural numbers added: 1 + 2 + 3 + 4 + +N = AAA (and exactly three digits of the same number), so what is n equal to?
• 7. Put the nine numbers - 1, - 2, - 3, - 4, 01234 in the space, so that all the three numbers of their horizontal, vertical and diagonal angles add up to zero
• 8. -The nine numbers 15-12-9-6-30369 are filled in the nine spaces respectively, so that the three numbers in each row, the three numbers in each column and the three numbers in diagonal are added
• 9. Put the nine numbers 0, 1, 2, 3, 4, 5, 6, 7 and 8 into the nine palace grid in the figure below. Add the three numbers in each row, column and diagonal to get eight sums. The sum of the eight sums is the largest______ ．
• 10. Fill in the nine numbers - 6, - 5, - 4, - 3, - 2, - 1,0,1,2 in the nine palace grid, so that the number of the three numbers on the diagonal of each line, row and column on the line is equal
• 11. 60% of x minus 3 equals 2 / 3 of 0.9
• 12. When a fraction is added, subtracted, and divided with itself, the sum, difference, and quotient of the result are added to 113. This fraction is______ ．
• 13. A fraction is added, subtracted, divided, and the sum, difference, and quotient of a fraction is 1 / 3 to the right? I haven't learned bivariate equations. It may take a lot of hard work,
• 14. What is the sum of 5 different fractional units of 1,
• 15. What is the sum of the three largest fractional units
• 16. Which three fractional units can 100% be divided into The specific process should be explained clearly
• 17. A simple method is used to calculate 1.4.6 △ 8 + 5.4 × 12.5% 2.8 / 1 × 6 / 1 + 87 Calculation by simple method 1.4.6÷8＋5.4×12.5％ 1 / 2.8 × 1 / 6 + 87.5% / 6 3.（6.35×65％＋3.65×0.65）÷20％ 4.0.2×37％＋0.63×20％＋44％
• 18. (2*3+4*6+6*9+8*12+10*15)/(3*6+6*12+9*18+12*24+15*30) (2 * 3 + 4 * 6 + 6 * 9 + 8 * 12 + 10 * 15) molecule -------------------------------------------= fractional line (3 * 6 + 6 * 12 + 9 * 18 + 12 * 24 + 15 * 30) denominator
• 19. 225 divided by 255 and 255 / 256 Please answer before August It's 255 divided by 255 and 255 / 256 The previous topic is wrong I'm sorry
• 20. 510 ÷ {42 × (5 / 6-3 / 7)} It's a process