👤
a fost răspuns

Aflați pe X din egalitatatile : a ) 54 - { 2X + [ ( X ÷ 2 + 12 ) ÷ 5 + 24 ] ÷ 3 ) ÷ 2 = 13
B ) 42 - { 2X + [ ( X ÷ 4 + 58 ] ÷ 3 ) ÷ 7 = 48

Răspuns :

Sabi0908
 54 - { 2X + [ ( X ÷ 2 + 12 ) ÷ 5 + 24 ] ÷ 3 ) ÷ 2 = 13(2X+[(X/2+12)/5+24]/3)/2=54-13=41
2X+[(X/2+12)/5+24]/3=41*2=82
[(X/2+12)/5+24]/3=82-2X
(X/2+12)/5+24=(82-2X)*3=82*3-2X*3=246-6X
(X/2+12)/5=246-6X-24=246-24-6X=222-6X
X/2+12=(222-6X)*5=222*5-6X*5=1110-30X
X/2=1110-30X-12=1110-12-30X=1098-30X
X=(1098-30X)*2=1098*2-30X*2=2196-60X
x=2196-60X         |61X-61X=X    61X=2196
X=2196/61
X=36

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