Add the two equations.
9y = 1 - 10
Solve by substitution.
-6x+5y=1
6x+4y=-10?
Please show all work.
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-6x+5y=1
6x+4y=-10
________
9y=-9
y=-1
6x+4(-1)=-10
6x-4=-10
6x=-6
x=-1
So x=-1 and y=-1
6x+4y=-10
________
9y=-9
y=-1
6x+4(-1)=-10
6x-4=-10
6x=-6
x=-1
So x=-1 and y=-1
using substitution, as requested,
-6x+5y=1
so y = (6x+1)/5
so using that in the other equation,
6x+4y=-10
6x + 4(6x+1)/5 = -10
30x + 24x + 4 = -50
54x = -54
x = -1
y = (6(-1)+1)/5 = -1
-6x+5y=1
so y = (6x+1)/5
so using that in the other equation,
6x+4y=-10
6x + 4(6x+1)/5 = -10
30x + 24x + 4 = -50
54x = -54
x = -1
y = (6(-1)+1)/5 = -1
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