If 23x + 101x = 130x, find the value of x
-
A.
7 -
B.
6 -
C.
5 -
D.
4
Correct Answer: Option D
Explanation
23x + 101x = 130x
2 x X1 + 3 x Xo + 1 x X2 + 0 x X1 + 1 x Xo
= 1 x Xo = 1 x X2 + 3 x X1 + 0 x Xo
= X2 + 3x + 0
2x + 3 = x2 + 0 + 1 + x2 + 3x
2x – 3x + x2 – x2 = -3 – 1
– x = -4
x = 4