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[(72:a-3x4) x 36-19x5]-(124x6-301x2)=195​

Răspuns :

Răspuns:

[(72:a-3×4)×36-19×5]-(124×6-301×2) =195

[(72:a-12)×36-95] - ( 744 - 602) = 195

[( 72:a - 12 )× 36 - 95] - 142 = 195

( 72 : a - 12 ) × 36 - 95 = 195 + 142

( 72 : a - 12 ) × 36 - 95 = 337

( 72 : a - 12 ) × 36 = 337 + 95

( 72 : a - 12 ) × 36 = 432

72 : a - 12 = 432 : 36

72 : a - 12 = 12

72 : a = 12 + 12

72 : a = 24

a = 72 : 24

a = 3

Răspuns:

[tex]\boldsymbol{ \red{ 3 }}[/tex]

Explicație pas cu pas:

[(72:a - 3×4)×36 - 19×5] - (124×6 - 301×2) = 195​

[(72:a - 12)×36 - 95] - (744 - 602) = 195​

[(72:a - 12)×36 - 95] - 142 = 195​

(72:a - 12)×36 - 95 = 195 + 142

(72:a - 12)×36 - 95 = 337

(72:a - 12)×36 = 337 + 95

(72:a - 12)×36 = 432

72:a - 12 = 432 : 36

72:a - 12 = 12

72:a = 12 + 12

72:a = 24

a = 72 : 24

[tex]\bf a = 3[/tex]

Proba: [(72:3 - 3×4)×36 - 19×5] - (124×6 - 301×2) = [(24 - 12)×36 - 95] - (744 - 602) = (12×36 - 95) - 142 = (432 - 95) - 142 = 337 - 142 = 195 (corect!)