2х - 3/4 х - 6 1/4 = 7 1/2
1 1/4 х = 7 1/2 + 6 1/4
1 1/4 х = 7 2/4 + 6 1/4
1 1/4 х = 13 3/4
х= 13 3/4 : 1 1/4 = 55/4 * 4/5
х= 11
проверим:
2*11 - 3/4 * 11 - 6 1/4 =7 1/2
22 - 33/4 - 25/4 = 7 1/2
22 - 14 2/4 = 7 1/2
7 2/4= 7 1/2
7 1/2 = 7 1/2
| - (-3)² -x|= 12⁴/ (3⁵*4³)
| -9-x| = (3*4)⁴ / (3⁵ *4³)
|-9-x| = (3⁴ *4⁴) / (3⁵ * 4³)
| -9 -x| = 4/3
x≥0
9+x=4/3
x=1 1/3 -9
x₁= -7 2/3
x<0<br>-9-x=4/3
-x=1 1/3 +9
-x=10 1/3
x₂= -10 1/3