Question

Solve the system algebraically.

y=3-1/2x

3x+4y=1

what is the value of x?

Answer 1

Use the expression for y in the second equation.
.. 3x +4(3 -(1/2)x) = 1
.. 3x +12 -2x = 1
.. x +12 = 1
.. x = -11