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Danutcolt
a fost răspuns

AFLA numarul x din exercitiile de mai jos a. ( 4536-x )-3215 =509 b. 3786-( x+927 )+1250= 3503 c. ( 7843-x )-5784=30590 d. 4398-(x+397)=2574

Răspuns :

(4536-x)-3215=509
(4535-X)=509+3215=3724
X=4536-3724=812
b) 3786-(x+927)+1250=
(x+927)+(3786-1250)
(x+927)=2536
x=2536-927=1609
c) (7843-x)-5784=30590
(7843-x)=30590+5784
x=28531
d)4398-(x+397)=2574
x+397=4398-2574
X+397=1824
X=1824-397
X=1427

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