[tex] - 12x + 7 = 79[/tex]
[tex] - 12x = 79 - 7[/tex]
[tex] - 12x = 72[/tex]
[tex]x = \frac{ \: \: \: 72}{-12} [/tex]
[tex]x = - 6[/tex]
Let us check whether we have found out the correct value of x or not by placing -6 in the place of x .
= -12 × -6 + 7 = 79
= 72 + 7 = 79
Therefore , 12 × -6 + 7 = 79 , ( x = - 6 ) .
