Linear system

Solve this linear system (two linear equations with two unknowns):
x+y =36
19x+22y=720

Correct answer:

x =  24
y =  12

Step-by-step explanation:


x+y =36
19x+22y=720

x+y =36
19·x+22·y=720

x+y = 36
19x+22y = 720

Pivot: Row 1 ↔ Row 2
19x+22y = 720
x+y = 36

Row 2 - 1/19 · Row 1 → Row 2
19x+22y = 720
-0.16y = -1.89


y = -1.89473684/-0.15789474 = 12
x = 720-22y/19 = 720-22 · 12/19 = 24

x = 24
y = 12

Our linear equations calculator calculates it.



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