Solving More Complex Systems Using Linear Combinations
Carnegie Learning Course 3: Chapter 12 Skills Practice
Name: _______________________________________________________________________ Period: _____________
Directions: Solve using linear combinations.
5𝑥 − 7𝑦 = 4
1. {
4𝑥 − 9𝑦 = −7
2𝑥 + 7𝑦 = 82
2. {
5𝑥 + 3𝑦 = 60
1.8𝑥 + 3.9𝑦 = 359.7
3. {
𝑥 + 𝑦 = 131
4. {7
4
2
𝑥 + 3 𝑦 = 100
𝑥 + 𝑦 = 160
0.6𝑥 − 0.5𝑦 = 0.4
5. {
3𝑥 − 4𝑦 = 14
3
6. {
1
3𝑥 + 2 𝑦 = − 2
9𝑥 + 5𝑦 = 1