Question

Află valorile lui,, N" din expresiile
a) (n+78):5+312=332
b)(238:n) +340:10=60

Answer 1

a) (n+78):5+312=332

  (n+78):5=332-312

   (n+78):5=20

   n+78=20×5

   n=100-78

   n=22

b)(238:n) +340:10=60

  (238:n) +340:10=

2380+340n=60×n×10

2380=600n-340n

2380=260n

n=2380:260

n=13