Question

Решите уровнение. 1)(374-8x)*16=480 2)a: 8+325=485. 3)19b-3b+5=133. 4)16a+a-21=721. 5)(5y-123)+24=248. 6)(658-18x): 34=17

Answer 1

1)5984-128х=480; -128х=480-5984; -128х=-5504; х=5504:128; х=43; 2)а:8=485-325; а:8=160; а=160*8; а=1280; 3)13b=133-5; 13b=128; b=128:13; b=9,8; 4)17a=721+21; 17a=742; a=742:17; a=43,6; 5)5y-123=248-24; 5y-123=224; 5y=224+123; 5y=347; y=347:5; y=69,4; 6)658-18x=34*17; 658-18x=578; -18x=578-658; -18x=-80; x=80:18; x=4,4

Answer 2

(374-8х)*16=480
(374-8х)*16:16=480:16
374-8х=30
-8х=30-374
-8х=-344
х=-344:-8
х=43

а:8+325=485
а:8=485-325
а:8=160
а:8*8=160*8
а=1280

19b-3b+5=133
16b=133-5
16b=128
b=128:16
b=8

16a+a-21=721
17a=721+21
17a=742
a= 43 целых 11/17

(5у-123)+24=248
5у-123=248-24
5у=224+123
у=347:5
у=69,4

(658-18х):34=17
(658-18х):34*34=17*34
658-18х=578
-18х=578-658
х=-80:-18
х=4 целых 4/9