2x-12 = 5x +15
2x-5х=12+15
-3х=27÷(-3)
х=-9
-24 + 3x = 9x+18
3х-9х=18+24
-3х=42÷(-3)
х=-14
3x – (10-9x) = 22x
3x – 10+9х=22х
9х+3х-22х=10
-10х=10÷(-10)
х=-1
26 – (17-2x) =5x
26 – 17+2х=5х
2х-5х=17-26
-3х=-9÷(-3)
х=3
Пошаговое объяснение:
