Based on the lesson, which of the following would be the best approach for solving this system by substitution? 5x = y + 6 2x - 3y = 4 Solve the first equation for x. Solve the first equation for y. Solve the second equation for x. Solve the second equation for y.
Okay, so it says we have to use SUBSTITUTION. That means we have to solve for a variable in one of either equations. Which equation would be the easiest to work with and use in this case?
Here are our two equations: 5x = y + 6 2x - 3y = 4 As you can see now, that the first equation already has a variable set, y. Now you should solve for y for the first equation.
The second approach would have to be the simplest, the reason why is because the y is easy to isolate. y=5x-6
So pretty much that can be substituted in the second equation: 2x -3(5x-6)=4 2x-15x + 18 = 4 -13x=-18+4 -13x = -14 x=14/13
thank you:)
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