If (x-1) is the solution of 3x-y=7
Find x?
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1).....3x-y=7.............(1)
-y=7-3x
y=-7-3x
putting y in eq. (1)
3x-(-7-3x)=7
3x+7+3x=7
6x+7=7
6x=7-7
6x=0
x=0/6
x=0
HOPE IT'S HELPFULL FOR YOU
-y=7-3x
y=-7-3x
putting y in eq. (1)
3x-(-7-3x)=7
3x+7+3x=7
6x+7=7
6x=7-7
6x=0
x=0/6
x=0
HOPE IT'S HELPFULL FOR YOU
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