2a + 3b = 4c + 5d
Isolate c terms
Add - 5d to both sides2a + 3b - 5d = 4c + 5d - 5d
4c = 2a + 3b - 5d
Divide each side by 4
| 4c | |
| 4 |
| = |
| 2a + 3b - 5d |
| 4 |
| c = | 2a + 3b - 5d |
| 4 |
| 4c | |
| 4 |
| = |
| 2a + 3b - 5d |
| 4 |
| c = | 2a + 3b - 5d |
| 4 |
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