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aniked [119]
3 years ago
6

Use substitution to solve the system 5x+4y=12 Y=2x-10

Mathematics
2 answers:
ivann1987 [24]3 years ago
7 0
Ok so do you know the steps for substitution

Anni [7]3 years ago
3 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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<img src="https://tex.z-dn.net/?f=3%28%20-%202%29%20%2B%202%28%20-%202%29%20-%204" id="TexFormula1" title="3( - 2) + 2( - 2) - 4
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