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Popular Problems Algebra Solve by Substitution y=2x , x+y=12
y=2x, x+y=12
Replace all occurrences of y in x+y=12 with 2x.
y=2x
x+2x=12
Simplify x+2x.
y=2x
3x=12
Divide each term by 3 and simplify.
y=2x
x=4
Replace all occurrences of x in y=2x with 4.
y=2(4)
x=4
Multiply 2 by 4.
y=8
x=4
The solution to the system of equations can be represented as a point.
(4,8)
The result can be shown in multiple forms.
Point Form:
(4,8)
Equation Form:
x=4,y=8
