Question

how do you do sysytems of equations

Answer 1

How big is the system? (how many equations?) And what kinds of equations? linear, quadratic, . . .?

Answer 2

an exapmle Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = −2

Answer 3

Ok. Substitution means to solve one equation for one of the variables, then plug that expression into the other equation to solve for the other variable.

Answer 4

e.g. you can solve the first equation for y:
y=(1-2x), then put that (1-2x) in place of y in the second equation, and you can find x.

Answer 5

ill try that, still confused

Answer 6

Does your second equation look like this now?
4x + 2(1-2x) = −2