4(2x+3)=7(x+2)
8x+12=7x+14
8x-7x=14-12
X=2
Ответ:2
315:60=5ост15 значит5часов15минут
1)10920:39=280
2)608*34=20672
3)280+20672=20952
<span>-0.5 * (3 * x - 4) + 15 * x = 4 * (1.5 * x + 1) + 3
</span>3 * x - 4 + 15 * x = (4 * (1.5 * x + 1) + 3) / (-0.5)
3 * x - 4 + 15 * x = (4 / (-0.5)) * (1.5 * x + 1) + (3 / (-0.5))
3 * x - 4 + 15 * x = (-8) * (1.5 * x + 1) + (-6)
3 * x - 4 + 15 * x = (-12) * x - 8 - 6
30 * x = (- 10)
x = - 1 / 3.