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6x+3y=15 Substitution method
y=1-x

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Substitute the value of y in the first equation with the second equation.

6x + 3(1-x) = 15

Simplify and solve for x:

6x + 3 - 3x = 15

3x + 3 = 15

3x = 12

x = 4

Now, substitute the value of x in the second equation to solve for y:

y = 1 - x

y = 1 - 4

y = -3

Therefore, the solution to the system of equations is (4, -3).

User Netloh
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