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Mathematics
Houston West
24 December, 10:23
Solving linear systems of substitution
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Ramos
24 December, 11:17
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Example: 2x+2y=8 and 3y+2x=6
Okay so u first want to put on of the equations into a y = form. So let's use 3y+2x=6. Subtract 2x from both sides. 3y=6-2x divide by 3. Y = 6-2/3x or y = - 2/3x + 6. Now just plug this new equation in for Y since "y=" into the other equation.
2x + 2 (-2/3x + 6) = 8.
Then you would distribute the 2 into the parenthesis and simplify to solve for x.
After you solve for x, plug x into one of the original equations to find y.
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