42=18t+4(t+5)
What is t?
Answers
Step-by-step explanation:
Simplifying
42 = 18t + 4(t + 5)
Reorder the terms:
42 = 18t + 4(5 + t)
42 = 18t + (5 * 4 + t * 4)
42 = 18t + (20 + 4t)
Reorder the terms:
42 = 20 + 18t + 4t
Combine like terms: 18t + 4t = 22t
42 = 20 + 22t
Solving
42 = 20 + 22t
Solving for variable 't'.
Move all terms containing t to the left, all other terms to the right.
Add '-22t' to each side of the equation.
42 + -22t = 20 + 22t + -22t
Combine like terms: 22t + -22t = 0
42 + -22t = 20 + 0
42 + -22t = 20
Add '-42' to each side of the equation.
42 + -42 + -22t = 20 + -42
Combine like terms: 42 + -42 = 0
0 + -22t = 20 + -42
-22t = 20 + -42
Combine like terms: 20 + -42 = -22
-22t = -22
Divide each side by '-22'.
t = 1
Simplifying
t = 1
Answer:
t=1
Step-by-step explanation:
42=18t+4t+20
42=22t+20
42-20=22t
22=22t
t=22/22
t=1