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soldiana5
@soldiana5
July 2022
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Пожалуйста, помогите решить всё по порядку. Заранее спасибо))
41,4(14/23x+5/9)-79,8(8/19x-5/6)=76,9
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antoniolio
Verified answer
41,4(14/23x+5/9)-79,8(8/19x-5/6)=76,9
1) 41,4*14/23x=414/10*14/23x=414*14/10*23x=18*7/5*1x=126/5x=25,2x
2) 41,4*5/9=414/10*5/9=414*5/10*9=46*1/2*1=46/2=23
3)79,8*8/19x=798/10*8/19x=798*8/10*19x=42*4/5*1=168/5x=33,6x
4) 79,8*5/6=798/10*5/6=798*5/10*6=133*1/2*1=133/2=66,5
25,2х+23 - 33,6х+66,5=76,9
-8,4х+89,5=76,9
-8,4х=76,9-89,5
-8,4х=-12,6
х=(-12,6):(-8,4)
х=1,5
Ответ: х=1,5
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41,4(14/23x+5/9)-79,8(8/19x-5/6)=76,91) 41,4*14/23x=414/10*14/23x=414*14/10*23x=18*7/5*1x=126/5x=25,2x
2) 41,4*5/9=414/10*5/9=414*5/10*9=46*1/2*1=46/2=23
3)79,8*8/19x=798/10*8/19x=798*8/10*19x=42*4/5*1=168/5x=33,6x
4) 79,8*5/6=798/10*5/6=798*5/10*6=133*1/2*1=133/2=66,5
25,2х+23 - 33,6х+66,5=76,9
-8,4х+89,5=76,9
-8,4х=76,9-89,5
-8,4х=-12,6
х=(-12,6):(-8,4)
х=1,5
Ответ: х=1,5