There are various tricks for isolating X. Some are easier than others. The first thing to do above would be to subtract 7 from each side. -2 - 7 = -9.
-9 = -x.
Now multiply each side by -1. 9 = x.
By the symmetric property, x = 9.
You would take 2 and replace it for x in your other equation and solve.
To solve the equation 14y154, we need to clarify the equation's format, as "y" typically represents a variable. If we assume "y" is a placeholder for an unknown digit and that the equation equals 0, we would need to eliminate the digit that, when substituted for "y," balances the equation. Without additional context or an equation to solve, it's not possible to determine a specific number to eliminate. Please provide more details for a precise answer.
You would do it it by oppisites. 3+2+4=9 which equals C.
To solve the equation ( x = 125 ), you would isolate ( x ) by multiplying both sides of the equation by 125. This would give you ( x = 125 \times \text{(some value)} ). If there is a specific value to solve for, please provide that for a more detailed solution.
-4
32
This equation is unsolvable since there are two unknowns and only one equation. You would require a second equation in order to solve it.
You'd need another equation to sub in
13
Add 8
Because this equation has four variables, it would require four unique equations involving only these four variables to solve.
Can't be done unless you have another equation with the same x and y. Then you would solve for simultaneous equations.