Question

Va rog ,ma poate ajuta cineva ?
[6+(m-6)x 4]:2=7

Answer 1

[ 6 + ( m - 6 ) x 4 ] : 2 = 7 
6 + ( m - 6 ) x 4 = 7 x 2 
6 + ( m - 6 ) x 4 = 14 
( m - 6 ) x 4 = 14 - 6 
( m - 6 ) x 4 = 8 
m - 6 = 8 : 4 
m = 2 + 6 
m = 8 

Verific [ 6 + ( 8 - 6 ) x 4 ] : 2 =( 6 + 2 x 4) : 2 = 14 : 2 = 7 

Answer 2

6+(m-6)×4=7×2=14
(m-6)×4=14-6=8
m-6=8:4=2
m-6=2
m=6+2
m=8