Question

[(m+4)×4-20]÷4+6=26​

Answer 1

[(m+4)*4-20:4=26 /-6
[(m+4)*4-20:4=20 /*4
[(m+4)*4-20=80 /+20
(m+4)*4=100 /:4
m+4=25 /-4
m=21
Sper ca te-am ajutat

Answer 2

Răspuns:  m = 21

Explicație pas cu pas:

[ ( m + 4 ) × 4 - 20] : 4 + 6 = 26​

[ ( m + 4 ) × 4 - 20] : 4 = 26 - 6

[ ( m + 4 ) × 4 - 20] : 4  = 20

( m + 4 ) × 4 - 20 = 20 × 4

( m + 4 ) × 4 - 20 = 80

( m + 4 ) × 4 = 80 + 20

( m + 4 ) × 4 = 100

m + 4 = 100 : 4

m + 4 = 25

m = 25 - 4

m = 21 → numărul, aflat prin metoda mersului invers

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Verific:

[(21+4)×4-20]:4+6=( 25×4-20) : 4 + 6 = (100-20) : 4+ 6 = 20 + 6 =26​