Pre Cal
posted by Kayla .
6x=2x+9
If you are to solve the equation for x, first try to get the variable on one side of the equation.
Let's subtract 2x from both sides to start (whatever operation you do to one side of an equation you must do to the other side as well):
6  x  2x = 2x  2x + 9
6  3x = 9
Now let's subtract 6 from both sides:
6  6  3x = 9  6
3x = 3
Divide both sides by 3 to get x by itself and solve the equation:
3x/3 = 3/3
x = 1
Does this check with the original equation? Substitute 1 for x and see if it checks out. It always helps to check your work!
I hope this will help.
THANK YOU SO MUCH! that helps me alot!
Respond to this Question
Similar Questions

Variable
SOLVING EQUATIONS WITH THE VARIABLE ON BOTH SIDES Solve the equation. Then check your solution. 4x9 = 7x+12 Just remember that one can add, subtract, multiply, divide, etc but whatever is done to one side must be done to the other … 
algebradistributive
how would you do this prob. negative4(5y+6) = negative 7y+3 thanks. happy halloween I'm going to assume your problem is this: 4  (5y + 6) = 7y + 3 If that's the case, distribute the negative over the terms in the parentheses first: … 
Algebra
I don't understand how to do this problems: Solve for the variable r, C=2PIr (PI is the pi symbol thing then r is next to it) and this problem solve for the variable l, S=B+1/2Pl please help :) When you solve for a variable, you want … 
Algebra
 20> 8 +7a Solve inequalities like you would an equation, EXCEPT if you multiply or divide by a negative number, reverse the inequality sign. Let's look at your problem:  20 > 8 + 7a First subtract 8 from both sides (whatever … 
Math
A=1/2H(B+b) Solve for H Let's start by getting rid of the fraction. Multiply both sides by 2 (whatever operation you do to one side of an equation you must do to the other side as well): 2(A) = 2[1/2H(B+b)] 2A = H(B+b) Now divide both … 
MATH PLEASE CHECK IT!!2
m2/m5*m+5/m2=1 If your problem is this: (m  2)/(m  5) * (m + 5)/(m  2) = 1 (m  2) cancels out in both the numerator and denominator on the lefthand side since you are multiplying. That leaves us with this: (m + 5)/(m  5) … 
mathpre alg
not sure i did right 3(f+2)+9=13+5f 3f+6+9 = 13+5f +9 3F+15 = 12+5F GOT MIXED UP SOMWERE HELP 3f +6 +9 = 13 + 5f 3f + 15 = 13 + 5f 2f = 2 f = 1 drwls is correct You are doing OK up to this point: 3f + 6 + 9 = 13 + 5f Now combine any … 
Math
q + 13 = 120 __ 8 I'm going to assume your problem is this: (q/8) + 13 = 120 If so, start by subtracting 13 from both sides of the equation. Whatever operation you do to one side of an equation you must do to the other side as well. … 
math
2x+4(1x)=11+5x 2x+44x=11+5x 6x+4=11+5x 6x=7+5x x=7 i think this is it x = 7 is not correct. Here's how the problem should work out: Use the distributive property to get rid of the parentheses and you will end up with this: 2x + 4 … 
Algebra
I am re posting this for fear that it was overlooked earlier. I have also decided to show my work in the hopes of preventing any issues that might arise. Solve the absolute value equation. I y+3 I +5=2y Would the solutions be 8=y and …