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25*{1942-8*[882-4*(60/15*X)]}=150ROG REZOLVARE

Răspuns :

25·{1942-8·[882-4·(60/15x)]}=150
1942-8·[882-4·(4/x)]=150:25
1942-8·[882-16/x]=6
8·[882-16/x]=1942-6
8·[882-16/x]=1936
882-16/x=1936:8
882-16/x=242
16/x=882-242
16/x=640
640x=16
x=16/640
x=1/40
x=0,0,25

1942 - 8 * [882 -4 × (60/15 × X)]=150÷25=6

8×[882-4 × (4 × X )]=1942 - 6=1936

882 - 4 × (4 × X )=1936 ÷8 = 242

882 - 242 = 4 × (4 × X)

640 = 4×(4×X)

4 ×X = 640÷4 = 160

X=160÷4

X=40