Question

4.12 + 1.5r = 2.1r + 1.9. How do you solve this equation?

a) r = 1.0
b) r = 2.0
c) r = 3.0
d) r = 4.0

Answer 1

To solve the equation 4.12 + 1.5r = 2.1r + 1.9, isolate the variable 'r' by combining like terms and then dividing both sides by the coefficient of 'r'. The solution is r = 3.7.

Step-by-step explanation:

To solve the equation 4.12 + 1.5r = 2.1r + 1.9, we need to isolate the variable 'r' on one side of the equation.

First, let's combine like terms on both sides:

4.12 - 1.9 = 2.1r - 1.5r

2.22 = 0.6r

To solve for 'r', divide both sides of the equation by 0.6:

r = 2.22 / 0.6

r = 3.7