7x-81=-2+72 i need getting the answer

7x - 81 = -2 + 72.
First you add up the left side. This gives us:
-2 + 72 = 70
So the equation becomes:
7× - 81 = 70
Now we add up 81 on both sides to get rid of the 81 on the left
7x = 151
Now divide both sides by 7
x = 151/7

I hope this clears it up for you! :)

7x-81= -2+72
7x= -2+72+81
7x= 151
x=21 4/7

For explanation: whenever a number passes a equal sign, it becomes its opposite. For example once the number 2 passes through the equal sign it become -2

Hope you get it! Hope this helps :)

Ithink it will be 2x + 6y = 14y - 19x² + 12  if that's what you meant to write for that equation.. notice that the third term in the expression on the right hand side of the equation has an exponent of "2".. this would make the equation a quadratic not linear.    hope this i'm interpreting your question correctly..