Equations: 2964

Solve a system of equations:

x + y = 4
x-3y = -6

Correct answer:

x =  1.5
y =  2.5

Step-by-step explanation:


x+y = 4
x-3y = -6

x+y = 4
x-3·y = -6

x+y = 4
x-3y = -6

Row 2 - Row 1 → Row 2
x+y = 4
-4y = -10


y = -10/-4 = 2.5
x = 4-y = 4-2.5 = 1.5

x = 3/2 = 1.5
y = 5/2 = 2.5

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