You can put this solution on YOUR website! Solve each system by elimination.
1) 10x - 8y = 16
20x - y = 2
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Modify for elimination::
20x - 16y = 2*16
20x - y = 2
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Subtract and solve for "y":
15y = -30
y = -2
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Solve for "x"::
10x = 8y + 16
10x = -16 + 16
x = 0
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2) -2x + 5y = 29
-2x + 2y = 20
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Subract and solve for "y"::
3y = 9
y = 3
Solve for "x":
2x = 5y-29
2x = 15-29
2x = -14
x = -7
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Cheers,
Stan H.
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You can put this solution on YOUR website! .
Solve each system by elimination.
1) 10x - 8y = 16
20x - y = 2
2) -2x + 5y = 29
-2x + 2y = 20
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1)
10x - 8y = 16 (1)
20x - y = 2 (2)
Multiply the equation (1) by 2 (both sides) and then distract it from (2). In this way you eliminate y
and get one single equation for x:
-y - (-16)y = 2 - 32,
15y = -30,
y = = -2.
Then find x from (2): 20x = y + 2 = -2 + 2 = 0, x = 0.
2)
-2x + 5y = 29 (1)
-2x + 2y = 20 (2)
Distract (2) from (1) and do the rest yourself.
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