Group our variables 15u and 55u subtract 55u from both sides 15u + 640 - 55u = 55u - 55u
Cancel 55u on the right side:
-40u + 640 = 0
Group constants:
Group our constants 640 and 0. subtract 640 from both sides -40u + 640 - 640 = 0 - 640
Cancel 640 on the left side:
-40u = -640
Divide each side of the equation by -40
-40u
-40
=
-640
-40
u = 16
u = 16
What is the Answer?
u = 16
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
