Question

Solve the system of equations by hand calculation. (Round your answers to two decimal places.)
5x + 8y = 2
4x − 6y = 3
(x,y) ____

Answer 1

one approach using elimination/addition method

Answer 2

pick the variable you want to eliminate

Answer 3

are you going to work with me here to let me help you?

Answer 4

yes!

Answer 5

so what variable do you want to eliminate?
what do you need to do to make the coefficients of that variable equal but opposite so that when added the sum is zero therefore the variable is eliminated?

Answer 6

you now have a linear (one unknown variable) equation
solve for that variable.
remember when working with an equation to keep the balance; whatever you do to one side also do to the other.

Answer 7

We can eliminate 8y I guess?

Answer 8

substitute this value in either of the original expression for the other variable and compute

Answer 9

not 8y just the variable

Answer 10

so divide both sides by 8 in the first equation

Answer 11

in order to do that the coefficients must be equal and opposite

Answer 12

so 5x+y=2/8