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Gilda
Mathematics
12 May, 07:57
Use substitution to solve the system
5x+4y=12
Y=2x-10
+3
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2
)
Edwin Petersen
12 May, 07:59
0
Substitute the 2x-10 in for I in the first equation:
5x+4 (2x-10) = 12
Distribute the 4:
5x+8x-40=12
Add 40 to both sides and combine the x terms:
13x=52
Divide by 13:
x=4
Plug the 4 into either equation for the x value:
y=2 (4) - 10
y=8-10
y=-2
Answer:
X=4
Y=-2
To check you can plug them into either one of the equations.
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Amara Marsh
12 May, 08:22
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Ok so do you know the steps for substitution
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