Question

Find the value of $k$, when $a=-1$ and $b=4$ is the solution of the equation $-2a=-5b+k$.

• A. 34
• B. -18
• C. 20
• D. 22

Answer 1

The correct option is D 22

If $a=-1,b=4$ is the solution of equation $-2a=-5b+k$, then they will satisfy the given equation.

Putting values of $a\&b$ in the given equation.
So,
$-2(-1)=-5\left(4\right)+k2=-20+k\Rightarrow k=20+2\Rightarrow k=22$.

Therefore, the value of k is 22.