1) 149.1-14.2=10.5
2)42-10.5=31.5
3)31.5×5.3=166.95
4)166.95+6.15=173.1
<span>|7-25х| = 32</span>
<span>-7+25х=32</span>
<span>25х=32+7</span>
<span>25х=39</span>
<span>х=39:25</span>
<span>х=1.56</span>
<span>Ответ:1.56</span>
<span>Проверка:-7+25*1.56=32</span>
Ответ:
Пошаговое объяснение:
3 1/4+2 1/6=3 3/12+2 2/12=5 5/12
5 1/6:31=31/6*1/31=1/6
5 5/12:2 3/5=65/12*5/13=25/12=2 1/12
2/3:4/9=2/3*9/4=3/2=1 1/2
1/6+2 1/12=2/12+2 1/12=2 1/4
2 1/4-1 1/2=2 1/4-1 2/4=3/4
(6х+2,4):32/9=6,75
6х+2,4=6,75×32/9
6х+2,4=24
6х=24-2,4
6х=21,6
х=21,6:6
х=3,6
1) 12000 - n = 60
n = 1200 - 60
n = 11940
Проверка
600 * 20 -11940 = 60
2)100 : у = 20
100 = 20у
у = 100:20
у = 5
Проверка
100: 5 = 20
3)d:500 = 4
d = 500*4
d =2000
Проверка
2000:500=4