Помогите заранее сябы. Created by Homka12345. matematika-ru

Помогите заранее сябы...

nastushka8787 (48:t+7)·6=90
48÷t+7=90÷6
48÷t+7=15
48÷t=15-7
48÷t=8
t=48÷8
t=6

100-(b*8-50)=30
b*8-50=100-30
b*8-50=70
b*8=70+50
b*8=120
b=120÷8
b=15

9600÷(540÷d-4)=600
540÷d-4=9600÷600
540÷d-4=16
540÷d=16+4
540÷d=20
d=540÷20
d=27

0 votes Thanks 0

Milena17 (48:t+7)·6=90
48:t+7=90:6
48:t+7=15
48:t=15-7
48:t=8
t=48:8
t=6
Проверка:
(48:6+7)·6=90
  (8+7)·6=90
15·6=90
  90=90

100-(b·8-50)=30
b·8-50=100-30
b·8-50=70
b·8=70+50
b·8=120
b=120:8
b=15
Проверка:
100-(15·8-50)=30
100-(120-50)=30
  100-70=30
  30=30

9600:(540:d-4)=600
540:d-4=9600:600
540:d-4=16
540:d=16+4
540:d=20
d=540:20
d=27
Проверка:
9600:(540:27-4)=600
  9600:(20-4)=600
9600:16=600
  600=600

0 votes Thanks 0

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