Solve equation 22.5-4x = 12.5
22.5-4X=12.5
22.5-12.5=4X
10=4X
X=2.5
RELATED INFORMATIONS
- 1. How to find the unit's "1" quantity? Let's try to talk about the front or back of what word
- 2. It is known that three numbers form an arithmetic sequence, the sum of which is equal to 24. If the third number is added with 4, then the three numbers form an arithmetic sequence, and the three numbers can be calculated
- 3. 5+10+15+20…… +95 + 100 + 105 = how to calculate
- 4. As shown in the figure, in ladder ABCD, ad ∥ BC, ∠ DCB = 45 °, CD = 2, BD ⊥ CD. Through point C, make CE ⊥ AB to e, intersect diagonal BD to F, point G is the midpoint of BC, connect eg and AF. (1) calculate the length of eg; (2) verify: CF = AB + AF
- 5. It is stipulated that △ is a new operation symbol, and a △ B = A & # 178; - a × B + A-1, for example, 2 △ 3 = 2 & # 178; - 2x3 + 2-1 = 4-6 + 2-1 = - 1 Please try to find the value of (1) 4 △ 5 according to the above regulations (2) The value of (- 2) △ (- 3)
- 6. Let n eigenvalues of n-order square matrix a be different from each other, and n-order square matrix B and a have the same eigenvalues?
- 7. 1-2 + 3-4 + 5-6. + 199-200 + 201 is equal to?
- 8. How to understand the definition of equivalence, similarity and contract matrix in line generation? 1. Equivalent matrix If the rank of a and B are equal, then a and B are equivalent, that is to say, any two matrices of the same type with the same rank pass through All elementary transformations can be transformed to be equal to each other? 2. Similarity, contract matrix How to understand the definition of p-1ap = B; p'ap = B? Why multiply an inverse matrix on the left and multiply an original matrix on the right? What's the geometry of these three relationships? --------------------------------------- No one understands? Answer as much as you know! --------------------------------------- Back to the third floor: What I want to know is about the source of the definition. --------------------------------------
- 9. For 2,7, - 6,19, - 22,39 The tenth item is [], and the nth item is [] I've become stupid recently. I can't find out who can help me=-=
- 10. If 3 ^ n + 11 ^ m can be divided by ten, can 3 ^ n + 4 also be divided by ten? most urgent!
- 11. What is the 108th power of 3
- 12. 354 ml =? Cubic decimeter Then there are 4.96 cubic decimeters =? Ml, 7150 cubic centimeters =? L, 5.22 liters =? Ml, 5240 liters =? Cubic decimeters
- 13. 1500 ml = () cubic centimeter = () cubic decimeter
- 14. Cubic 3 / cubic 2 is equal to
- 15. How many tons is a cubic meter of 3.25 cement?
- 16. How many cubic kilometers is 130 cubic centimeters How many cubic meters is one cubic centimeter
- 17. How many billion cubic kilometers is 2800 billion cubic meters?
- 18. How many cubic meters is a cubic kilometer
- 19. 2100 ml = () cubic centimeter = () cubic decimeter 0.32 L = () ml = () cubic centimeter 6 L 40 ml = () l
- 20. How many square centimeters is one hectare?