Пошаговое объяснение:
z÷7=8743
z=8743*7
z=61201
61201:7=8743
8743=8743
7×t=14217
t=14217:7
t=2031
7*2031=14217
14217=14217
12001 - u = 7356
u=12001-7356
u=4645
12001-4645=7356
7356=7356
9428=v÷6
v=6*9428
v=56568
56568:6=9428
9428=9428
1242 = y - 8758
у=1242+8758
у=10000
10000-8758=1242
1242=1242
28 126 ÷z =7
z=28126:7
z=4018
28126:4018=7
7=7
1546+y = 1546
у=1546-1546
у=0
1546+0=1546
1546=1546
v+0=564
v=564-0
v=564
564+0=564
564=564
z-256=256
z=256+256
z=512
512-256=256
256=256
3047=75+x
х=3047-75
х=2972
75+2972=3047
3047=3047
5086-u=758
u=5086-758
u=4328
5086-4328=758
758=758
900=v+407
v=900-407
v=493
493+407=900
900=900
9,6b+(7-0,4b)= 9,6b+7-0,4b=9,2b+7
5.3a-(2a+3)=5,3a-2a+3=3,3a+3
2(y-4)+10y=2(y-4+5y)=2(6y-4)=2×2(6y-2)=4(6y-2)