Hi my name is patty and I am a student taking a pre-calculus course and need help with the following:
5x - 4y = 13
2y + 3x = -1
Would I solve like this,
2y +3x = -1
y = -1/2 -3/2 x
solve for x
5x - 4(-1 -3x) = 13 now I need help ?
Thank you, Patty.
What you have is almost correct, there is however an error in the last line. When you substituted y = -1/2 -3/2 x you should have gotten
The next step is to multiply through the expression in parenthes by -4 to get
Now use y = -1/2 -3/2 x to find y and finally substitute the values of x and y into the two original equations to verify your result.Penny
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