Question

Determinati numarul n,stind ca {120-2×[14+5×(x-3)]}÷4=8


Urgent ​

Answer 1

Răspuns:

X = 9

Explicație pas cu pas:

{120-2 x [14 + 5 x ( X - 3 )]} : 4 = 8

120 - 2 x [ 14 + 5 x ( X - 3 )]} = 8 x 4

120 - 2 x [ 14 + 5 x ( X - 3 )]} = 32

2 x [ 14 + 5 x ( X - 3 )] = 120 - 32

2 x [ 14 + 5 x ( X - 3 ) ] = 88

14 + 5 x ( X - 3 ) = 88 : 2

14 + 5 x ( X - 3 ) = 44

5 x ( X - 3 ) = 44 - 14

5 x ( X - 3 ) = 30

X - 3 = 30 : 5

X - 3 = 6

X = 6 + 3

X = 9