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·(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
