Posted by **SAP** on Thursday, September 30, 2010 at 8:06pm.

Solve by substitution method. Show step by step process.

4x+5y=27

x=26-4y

- Math need by 9pm cst -
**bobpursley**, Thursday, September 30, 2010 at 8:09pm
You need to show some work. I think you are answer grazing.

- Math need by 9pm cst -
**SAP**, Thursday, September 30, 2010 at 9:36pm
4x+5y=27

x=26-4y

4(26-4y) + 5y = 27

104 - 16y+ 5y = 27

-21y = - 77

21y = 77

y = 77/31

Now, I’m suppose to return to the 2nd equation x=26-4y and substitute 77/31 for x, I don’t understand if the is correct way or how to get the answer for the ordered pair.

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