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Resolving prime factor：
Enter a composite number and click the "Next" button to get the product of the composite number into several prime numbers.
Because it needs to decompose a composite number into the product of prime numbers, the composite number should be input.
Enter a composite number and click the "Next" button to get the product of the composite number into several prime numbers.
Because it needs to decompose a composite number into the product of prime numbers, the composite number should be input.
Current location：Mathematical operation > Decomposition prime factor history > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation x+3+2x = 7x .
Question type: Equation
Solution:Original question:
| x | + | 3 | + | 2 | x | = | 7 | x |
| Left side of the equation = | 3 | x | + | 3 |
| 3 | x | + | 3 | = | 7 | x |
Transposition :
| 3 | x | − | 7 | x | = | - | 3 |
Combine the items on the left of the equation:
| - | 4 | x | = | - | 3 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
| 3 | = | 4 | x |
If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :
| 4 | x | = | 3 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 3 | ÷ | 4 |
| = | 3 | × | 1 4 |
We obtained :
| x | = | 3 4 |
Convert the result to decimal form :
| x | = | 0.75 |