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ways the answer to 12x-3y=3 and y=4x-1

Sagot :

Willmore2499
Well first you want to be trying to solve for the same variable in both problems. Lets solve for Y. 
This means we must make both equations say " Y="

first we subtract 12x from both sides of "12x-3y=3"  which leaves us with
-3y=3-12x and y=4x-1.

you are basically going to merge the 2 problems by adding "1" to both problems and then subtracting "4x" from both as well as subtracting "y" from both. This gets rid of a variable in one problem and essentially puts in to the other in the process.

This leaves you with -4y=4-16x
Can you solve from there?
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