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Braxton Lambert
Mathematics
Yesterday, 23:17
How do use u substitution?
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Monica Hayes
Yesterday, 23:20
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The substitution method is used to find the values. Simply replace the equations into another, and solve for the 2 values.
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Dania Bender
Yesterday, 23:28
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In the form of algebra substitution is the method used in simultaneous equations.
E. g y=2x+5 and y=5x-1
Solve for x and y
Since we know two examples of what y is, we can substitute one y in replacement of the other to get.
2x+5=5x-1 then we solve for x to get:
x = 2 sub this back in to get y = 2 (2) + 5
y = 9
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