Group our variables a and 3a subtract 3a from both sides a + 20 - 3a = 3a - 3a
Cancel 3a on the right side:
-2a + 20 = 0
Group constants
Group our constants 20 and 0. subtract 20 from both sides -2a + 20 - 20 = 0 - 20
Cancel 20 on the left side:
-2a = -20
Divide each side of the equation by -2
-2a
-2
=
-20
-2
a = 10
Final Answer
a = 10
What is the Answer?
a = 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
