Homework Help: algebra

Posted by babs on Saturday, July 23, 2011 at 12:58pm.

would someone write out the whole process of the following question, including solving for y so that i can see what i am doing wrong. Thank you

Solve by the substitution method. write as an ordered pair.
8x-3y=-94
2x+22=y

Algebra - Mithra, Saturday, July 23, 2011 at 5:57pm
8x - 3y = 94 ---- Equation 1
2x + 22 = y ---- Equation 2
--------------

Sub y = 2x + 22 in equation 1

8x - 3(2x + 22) = 94

8x - 6x - 66 = 94

2x = 94 + 66

2x = 160

x = 160/2

x = 80

Now sub x = 8 in eq 1 or eq 2 and find for y
algebra - Mithra, Saturday, July 23, 2011 at 6:06pm
Sorry, I made a mistake.

Substitute x = 80 in equation 1 or equation 2 and fine for y.

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