y = 2x + 2
Variables are just letters to solve for the unknowns. ex of a variable: 4x-6 = 16 x is a variable in this case, so we solve for it 4x = 22 x = 11/2
equivalent fractions 1over 2
You may want to be a little more specific about what your question is asking....... you can solve a variable in an equation or expression. For example: 1+2=y just remember, you arnt necessarily "solving" a variable, but I guess you could say that considering a variable can change continuously. Be sure to consider that if you do "solve" a variable you end up with a constant ( a never-changing number) therefore, it is no longer a variable, but just an answer. Hope that helped! :-)
2
96
There is no equation (nor inequality) in the question. There is also no unknown variable. So there is nothing to solve.
Explain why 49 -1/2 and -7 are not equivalent
Your equation has two variables in it ... 'a' and 'x'. So the solution is a four-step process: 1). Get another independent equation that relates the same two variables. 2). Solve one of the equations for one of the variables. 3). Substitute that into the other equation, yielding an equation in a single variable. Solve that one for the single variable. 4). Substitute that value back into the first equation, and solve it for the second variable.
2.3a = 4.6 In order to leave the variable alone (without the coefficient), divide by 2.3 to both sidesa = 2
Assuming you meant to insert an = between xyy and 4, then xyy=4. Divide by x to get yy=4/x. yy is y^2, so y^2=4/x. Take the square root of both sides to get y=±√(4/x)
To solve -2+x=7, you need to isolate the variable x by adding two to both sides of the equation. -2+x=7 -2+x+2=x 7+2=9 x=9