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

Question

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

triciaal · Answer

one approach using elimination/addition method

triciaal · Answer

pick the variable you want to eliminate

triciaal · Answer

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

anonymous · Answer

yes!

triciaal · Answer

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?

triciaal · Answer

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.

anonymous · Answer

We can eliminate 8y I guess?

triciaal · Answer

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

triciaal · Answer

not 8y just the variable

anonymous · Answer

so divide both sides by 8 in the first equation

triciaal · Answer

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

anonymous · Answer

so 5x+y=2/8

triciaal · Answer

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