✔ 最佳答案
14.2t - 25.2 = 3.8t + 26.8
Get the terms containing a t-variable on one side of the equation and the terms
without any variables on the other side.
Subtract 3.8t from both sides.
14.2t - 3.8t - 25.2 = 3.8t - 3.8t + 26.8
10.4t - 25.2 = 26.8
Add 25.2 to both sides.
10.4t - 25.2 + 25.2 = 26.8 + 25.2
10.4t = 52.0
Divide both sides by 10.4.
10.4t/10.4 = 52.0/10.4
t = 5
CHECK
14.2t - 25.2 = 3.8t + 26.8
14.2(5) - 25.2 = 3.8(5) + 26.8
71.0 - 25.2 = 19.0 + 26.8
45.8 = 45.8
The above identity indicates that the value t = 5 is correct.