Question

.25a +.50b+4c=20find a,b&c

Answer 1

Step-by-step explanation:

0.25a + 0.50b + 1c = 20

Solving

0.25a + 0.50b + 1c = 20

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-0.50b' to each side of the equation.

0.25a + 0.50b + -0.50b + 1c = 20 + -0.50b

Combine like terms: 0.50b + -0.50b = 0.00

0.25a + 0.00 + 1c = 20 + -0.50b

0.25a + 1c = 20 + -0.50b

Add '-1c' to each side of the equation.

0.25a + 1c + -1c = 20 + -0.50b + -1c

Combine like terms: 1c + -1c = 0

0.25a + 0 = 20 + -0.50b + -1c

0.25a = 20 + -0.50b + -1c

Divide each side by '0.25'.

a = 80 + -2b + -4c

Simplifying

a = 80 + -2b + -4c