Advertisements
Advertisements
Question
If k + 7 = 16, then the value of 8k – 72 is ______.
Options
0
1
112
56
Advertisements
Solution
If k + 7 = 16, then the value of 8k – 72 is 0.
Explanation:
Consider the given equation k + 7 = 16
To find out the value of K
Transpose 7 to right-hand side then it becomes –7
k = 16 – 7
k = 9
Then, the value of 8k – 72 will be,
= (8 × 9) – 72
= 72 – 72
= 0
APPEARS IN
RELATED QUESTIONS
Solve the following equations.
`a/5 + 3 = 2`
Solve the following equations.
3 (n - 5) = -21
Solve the following equations.
4(2 - x) = 8
If a and b are positive integers, then the solution of the equation ax = b will always be a ______.
Which of the following equations cannot be formed using the equation x = 7?
Sum of two numbers is 81. One is twice the other.
The solution of the equation is ______.
If z + 3 = 5, then z = ______.
In whole numbers, x + 8 = 12 – 4 has ______ solution.
If 10 less than a number is 65, then the number is ______.
A number exceeds the other number by 12. If their sum is 72, find the numbers.
