Question

Решите уравнения:а)10у+у=121 б)19у-у+65=767 в)(36+6х):24=17 г)12у+у=169 е)23х+х-35=997 ж)(5у+21):26=16

Answer 1

10y+y=121
11y=121
y=121/11
y=11
19y-y+65=767
18y=767-65
18y=702
y=702/18
y=39
(36+6x):24=17
36/24+6x/24=17
6x/24=17-36/24
6x/24=51/2
12x=1224
x=102
12y+y=169
13y=169
y=13
23x+x-35=997
24x=997+35
24x=1032
x=43