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bearhunter [10]
3 years ago
11

Solve the system of equations using the Substitution Method (show work)

Mathematics
1 answer:
FromTheMoon [43]3 years ago
3 0
Since both equations have 3y, we will substitute 3y.
2x-3y = 20 eq 1
rearrange
2x - 20 = 3y
sub the value of 3y into eq2
11x + (2x-20) = -1
11x + 2x - 20 = -1
13x = 19
x =19/13

sub value of x into any equation
2(19/13) - 3y =20
38/13 - 20 = 3y
-222/13 = 3y
y = -74/13
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