I'm assuming you need to evaluate/simplify the equation, so you need to isolate/get x by itself in the equation:
2(3x + 1) = 11 Divide by 2 on both sides
3x + 1 = 
[11/2 or 5.5] Subtract by 1 on both sides
[make the denominator the same to combine fractions]
3x = 
Divide by 3 on both sides
x = 
9514 1404 393
Answer:
5x + 12 = 5x - 7
Step-by-step explanation:
There will be no solution when the coefficients of x are the same on both sides of the equal sign and the constants are different. That is the case for ...
5x + 12 = 5x - 7
This reduces to ...
19 = 0 . . . . . no value of x will make this be true: NO SOLUTION
The equation is -42=2a+15
I just picked the variable to be a
Now I would divide 2a by 2 to make it just a
And divide -42 by 2 to make it -21. Then you would have -21=a+15
Subtract 15 from 15 to cancel it out
And then subtract 15 from -21 to get
-36=a
the variable is -36
The set of whole number since it is defined as positive integers + zero
