Question

( a : 3 - 5 ) x 9 + 186 : 6 = 400:10​

Answer 1

Răspuns:

(a:3-5)×9+186:6=400:10

(a:3-5)×9+31=40/-31

(a:3-5)×9=9/:9

a:3-5=1/+5

a:3=6/×3

a=18

Answer 2

( a : 3 - 5 ) x 9 + 186 : 6 = 400:10​

Folosim metoda mersului invers.

( a : 3 - 5 ) · 9 + 186 : 6 = 40

( a : 3 - 5 ) · 9 + 186 = 40 · 6

( a : 3 - 5 ) · 9 + 186 = 240

( a : 3 - 5 ) · 9 = 240 - 186

( a : 3 - 5 ) · 9 = 54

( a : 3 - 5 ) = 54 : 9

( a : 3 - 5 ) = 6

a : 3 = 6 + 5

a : 3 = 11

a = 11 · 3

a = 33

Sper că te-am ajutat!

Succes!