Answer:
k = -3.8
Step-by-step explanation:
Equation Solving
We are given the equation:
k + 7.2 = 3.4
To solve the equation we must make k the subject, that is, isolate the letter k at the left side of the equation.
Since the number 7.2 is adding with k, we subtract 7.2 on both sides:
k + 7.2 - 7.2 = 3.4 - 7.2
Simplifying the left side, the numbers cancel:
k = 3.4 - 7.2
Now calculate the subtraction 3.4-7.2=-3.8
k = -3.8
