2x-9:(дробь)6-2(5x+3):15=1(дробь)2.

Question

2x-9:(дробь)6-2(5x+3):15=1(дробь)2.

Answer 1

(2x-9)/6 - 2(5x+3)/15 = 1/2
(2x-9)/6 - 2(5x+3)/15 - 1/2 = 0
[15(2x-9) - 6*2(5x+3) - 45]/90 = 0
[30x-135-60x-36-45]/90 = 0
-30x-216 = 0
30x+216 = 0
30x = -216
x = -7,2