Group our variables x and 3x subtract 3x from both sides x + 9 - 3x = 3x - 11 - 3x
Cancel 3x on the right side:
-2x + 9 = -11
Group constants
Group our constants 9 and -11. subtract 9 from both sides -2x + 9 - 9 = -11 - 9
Cancel 9 on the left side:
-2x = -20
Divide each side of the equation by -2
-2x
-2
=
-20
-2
x = 10
x = 10
What is the Answer?
x = 10
How does the Equation and Inequalities Calculator work?
Free Equation and Inequalities Calculator - Solves an equation or inequality with 1 unknown variable and no exponents as well as certain absolute value equations and inequalities such as |x|=c and |ax| = c where a and c are constants. Solves square root, cube root, and other root equations in the form ax^2=c, ax^2 + b = c. Also solves radical equations in the form asqrt(bx) = c. Also solves open sentences and it will solve one step problems and two step equations. 2 step equations and one step equations and multi step equations This calculator has 1 input.
What 3 formulas are used for the Equation and Inequalities Calculator?
One Step Equations (Division):
cx = b
x = b/c
One Step Equations (Addition):
x + c = b
x = b - c
One Step Equations (Subtraction):
x - c = b
x = b + c
