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Tiara Salazar
Mathematics
17 June, 19:06
Solve using substitution y=3x-4 2x+y=10
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Kassidy Moyer
17 June, 19:22
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x=2.8
y=4.4
Step-by-step explanation:
First, you would put what y equals into the second equation in replacement of y 2x + (3x-4) = 10
You would then add 4 to the side with 10 because you're canceling out the - 4. 2x+3x=10+4
Then combine on both sides. 5x=14
And then divide 14 by 5 and you get 2.8
You would then put 2.8 in replacement of x and figure out the y (use any equation you'd like)
The easiest equation in this situation would be y=3x-4 so then you plug 2.8 in for x.
3 (2.8) - 4 and solve to get y.
You can check your answer by plugging x and y into an equation.
2 (2.8) + 4.4 = 10
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