Question

If 3x – y = 9 and x – 2y = 6 represent a system of the equations, then the value of x + y is

Answer 1

Answer:

The answer is 3.8 units

Step-by-step explanation:

Given,

3x - y = 9 and x - 2y = 6

let the equations be 1&2

3x - y = 9........ 1

x - 2y = 6........2

by solving

eq1×1 = 3x - y = 9

eq2×3 = 3x - 6y = 6

----------------------------------

5y = 3

y = 3/5 = 0.6

let y = 0.6 in eq 1

3x - y = 9

3x - 0.6 = 9

3x = 9 + 0.6

3x = 9.6

x = 3.2

so by getting both values

x + y = 3.2 + 0.6 = 3.8 units

HOPE IT HELPED