Question

Ma puteti ajuta va rog la exercitiul asta. 4.Afla valuarea lui "n". 9x7+n=100 , 48:6-n-=3 , n-42:7=37 astea sunt exercitiile ma ajutati va rog.

Answer 1

9x7+n=100
63+n=100
n=100-63
n=37
V:9x7+37=100
48:6-n=3
8-n=3
n=8-3
n=5
V:48:6-5=3
n-42:7=37
n-6=37
n=37+6
n=43
V: 43-42:7=37

Answer 2

a) 9x7+n=100
63+n=100
n=100-63
n=37

b) 48:6-n=3
8-n=3
-n=3-8
-n=-5   /x(-1)
n=5

c) n-42:7=37
n-6=37
n=37+6
n=43