Question

Mă ajutați vă rog.. ​

Answer 1

Răspuns:

a ) x + 4 = 31 => x = 31-4 = x=27

b ) x + 6 = 47 => x= 47-6=41 = x=41

c) x-8=11 => x=11+8=19= x=19

d)x-7=25 => x=25-7 => x=18

e) 7×x =56 => x= 56:7 = x=8

f) 15×x = 60 => x= 60:15= x=4

g) x/100 = 12 => x = 12 × 100 = x=1200

h)x : 11 =7 => x=7×11 = x= 77

i) x/8 = 90 => x= 90×8 = x = 730

j)2x + 3 = 15 => 2x=15+3 => 2x =18 => 2 : x = 18 => x = 18:2 => x=9

Explicație pas cu pas:

spor la scris !! ;)