De oplossing van de
exponentiële vergelijking

5x+3 + 5x+4 = 2x+4 + 2x+5   is
A.   1
B.   − 1
C.   3
D.   − 3
E.   6
A    B    C    D    E 

[ 6-7769 - op net sinds 23.10.14-(E)-27.10.2023 ]

Translation in   E N G L I S H

What is the solution
of the equation

5x+3 + 5x+4 = 2x+4 + 2x+5   ?
A.   1
B.   − 1
C.   3
D.   − 3
E.   6

Oplossing - Solution

    5x+3 + 5x+4 = 2x+4 + 2x+5
⇔ 125.5x + 625.5x = 16.2x + 32.2x
⇔ 5x(125 + 625) = 2x(16 + 32)
⇔ 5x.750 = 2x.48     / : 6
⇔ 5x.125 = 2x.8
⇔ 5x / 2x = 8 / 125
⇔ (5 / 2)x = (2 / 5)3
⇔ x = ...