Question:
Addition method
Equations involving fractions or decimals, solve using the addition method
1. 3/7x + 5/9y = 27
1/9x + 2/7y = 7
2. 3x -2.5y = 7.125
2.5x - 3y = 7.3125
3. solve by graphing. Indicate whether each system is: independent, dependent, inconsistent
y = 3x - 4
y = 2x + 1
3x - y = 4
3x - y = 0