Пошаговое объяснение:
7 1/4 + 1 1/4x = 4
29/4+5/4х=4
1,25х=4-7,25
1,25х=-3,25
х= -3,25:1,25
х= -2,6
17 1/3 - 7 1/2x = 3
52/3-15/2х=3
15/2х=52/3-9/3
15/2х=43/3
х=43/3:15/2
х=43/3*2/15
х=86/45=1 41/45
2x + 4 1/4 = 7 1/7
2х=50/7-17/4
2х=200/28-119/28
2х=81/28
х=
81/28:2/1
81/28*1/2
х=81/56=1 25/56
2 1/14x + 9 1/4 = 16 3/8
29/14х=131/8-37/4
29/14х=131/8-74/8
29/14х=57/8
х=57/8:29/14
х=57/8*14/29
х=399/116
х=3 51/116
Пошаговое объяснение:
7 1/4 + 1 1/4x = 4
29/4+5/4х=4
1,25х=4-7,25
1,25х=-3,25
х= -3,25:1,25
х= -2,6
17 1/3 - 7 1/2x = 3
52/3-15/2х=3
15/2х=52/3-9/3
15/2х=43/3
х=43/3:15/2
х=43/3*2/15
х=86/45=1 41/45
2x + 4 1/4 = 7 1/7
2х=50/7-17/4
2х=200/28-119/28
2х=81/28
х=
81/28:2/1
х=
81/28*1/2
х=81/56=1 25/56
2 1/14x + 9 1/4 = 16 3/8
29/14х=131/8-37/4
29/14х=131/8-74/8
29/14х=57/8
х=57/8:29/14
х=57/8*14/29
х=399/116
х=3 51/116