Solving the Equation: 0.2(x + 2y) - 0.3(2x - y) = 3.5
This article will guide you through the steps of solving the linear equation: 0.2(x + 2y) - 0.3(2x - y) = 3.5. We'll break down the process to make it easy to understand.
1. Distribute the coefficients:
Begin by distributing the coefficients outside the parentheses:
- 0.2x + 0.4y - 0.6x + 0.3y = 3.5
2. Combine like terms:
Next, combine the 'x' terms and the 'y' terms:
- (-0.6x + 0.2x) + (0.4y + 0.3y) = 3.5
- -0.4x + 0.7y = 3.5
3. Isolate 'x' (or 'y'):
Now, you can choose to isolate either 'x' or 'y'. Let's isolate 'x' for this example:
- -0.4x = 3.5 - 0.7y
4. Solve for 'x':
Divide both sides by -0.4 to get 'x' by itself:
- x = (3.5 - 0.7y) / -0.4
5. Simplify (Optional):
You can simplify the expression further if needed:
- x = -8.75 + 1.75y
Conclusion
The equation 0.2(x + 2y) - 0.3(2x - y) = 3.5 has been solved for 'x'. The solution is x = -8.75 + 1.75y. Keep in mind that this solution expresses 'x' in terms of 'y'. To find a specific value for 'x', you would need to substitute a value for 'y'.