-15 + 6y = 13
6y = 13+15=28
y=28/6=4.66 or 4 and 2/3
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Solving these simultaneous equations by the elimination method:- x = 1/8 and y = 23/12
-6y + 5 = -67y=12-6y = -72-y = -12y = 12
-6y+3 = -7y+8 -6y+7y = 8-3 y = 5
it is equal to 6y plus y
-9x+6y = 54 6y = 9x+54 y = 1.5x+9 slope = 1.5