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Jean
Mathematics
26 March, 02:49
Substitute x+2y=8 3x+2y=6
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Darion Yoder
26 March, 03:01
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X + 2y = 8
3x+2y = 6
x + 2y = 8
-2y - 2y
x = 8 - 2y
Now replace the value for x into the second equation.
3 (8-2y) - 2y
Distribute property
3*8 = 24
3*2y = 6y
24 - 6y - 2y = 6
24 - 8y = 6
-24 - 24
-8y = - 18
-8y/8 = - 18/8
y = 2.25
Now replace the value for y into the equation.
x + 2 (2.25) = 8
x + 4.5 = 8
-4.5 - 4.5
x = 3.5
Now we have our two values.
x = 3.5
y = 2.25
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Jaydan
26 March, 03:03
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Use x+2y=8
Subtract 2y to make
x=8-2y
Plug this in to the other equation
3 (8-2y) + 2y=6
Distribute the 3
24-6y+2y=6
Combine like terms
24-4y=6
Solve
18/4=y, 9/2=y
Plug and solve for x
X+2y=8
X + (2*9/2) = 8
X+9=8
X=-1
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