I would use substitution
sub the 1st into the 2nd
4x - y = -2
4x - (2x) = -2
2x = -2
x = -1
then back into the first
y = 2x
y = 2(-1) = -2
thank you ....
2x + 4y = 24
x - 2y = -8
my mom tried helping me but didn't understand it....
For your second example I would use substitution again
Notice that in the second equation the x variable is all by itseld, that is, it is 1x understood.
That is the key.
look for a variable like that and solve for it
x - 2y = -8
x = 2y - 8
now sub that x value of (2y-8) into the other equation
2(2y-8) + 4y = 24
4y - 16 + 4y = 24
8y = 24 + 16
8y = 40
y = 40/8 = 5
now plug that into
x = 2y-8
x = 2(5)-8 = 2
so x=2, y=5
Answer this Question
Math 8R - HELP! - Multi-Step Equations Systems of Equations x + y = 0 5x + 2y...
Math 8 HELP! - Multi-Step Equations Systems of Equations y = 2x - 4 y = x - 1 ...
algebra 1 - ELEMENTARY ALGEBRA #3 Page 23 Chapter 3 Lesson 3.02 Solving Multi-...
Math !!!!ASAP!!!!! - What makes a multi step equation a multi step equation????
Math - We are doing multi-step equations in math. And this equation is kind of ...
Math 8 - help!!!!!!!!!!!!!!! - Multi-Step Equations Solve: 2(4-d+2d) = 12 please...
Math - I am really have a tough time trying to solve this problem. I think my ...
math - Can you please give me a example of a - and + multi step equation
Algebra - We're doing multi-step equations, and I need help on how to check my ...
math/algebra - solve each of the following systems by substitution. 16) 5x -2y...