Jambmaths question:
If –2 is the solution of the equation 2x + 1 – 3c = 2c + 3x – 7, find the value of c
Option A:
4
Option B:
3
Option C:
2
Option D:
1
Jamb Maths Solution:
$\begin{align} & 2x+1-3c=2c+3x-7 \\ & \text{Substitute }x=2 \\ & 2(-2)+1-3c=2c+3(-2)-7 \\ & -3-3c=2c-6-7 \\ & -3-3c=2c-13 \\ & 5c=10 \\ & c=2 \\\end{align}$
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