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danilzukin
@danilzukin
July 2022
3
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(5x+4)/2 + 3= (9x)/4
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misharina1488
Х=-20
просто упрощаешь
2 votes
Thanks 2
danilzukin
спасибо
danilzukin
А разве -16+(-24) не 40
misharina1488
точно!(
danilzukin
всё я исправил
misharina1488
тогда ответ -20
evvoronina1
(5х+4)/2 + 3 = 9х/4
Умножим обе части уравнения на 4:
4((5х+4)/2 +3) = 4(9х/4)
2(5х+4) + 12 = 9х
10х + 8 + 12 = 9х
10х - 9х = -20
х = -20
Проверка
(5•(-20)+4)/2+3 =
= (-100+4)/2+3 =-96:2+3 =
= -48+3=-45
9•(-20)/4= -180:4 = -45
-45 = -45
0 votes
Thanks 0
evvoronina1
(5х+4)/2 + 3 = 9х/4
Умножим обе части уравнения на 4:
4((5х+4)/2 +3) = 4(9х/4)
2(5х+4) + 12 = 9х
10х + 8 + 12 = 9х
10х - 9х = -20
х = -20
Проверка
(5•(-20)+4)/2+3 =
= (-100+4)/2+3 =-96:2+3 =
= -48+3=-45
9•(-20)/4= -180:4 = -45
-45 = -45
0 votes
Thanks 0
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Answers & Comments
просто упрощаешь
Умножим обе части уравнения на 4:
4((5х+4)/2 +3) = 4(9х/4)
2(5х+4) + 12 = 9х
10х + 8 + 12 = 9х
10х - 9х = -20
х = -20
Проверка
(5•(-20)+4)/2+3 =
= (-100+4)/2+3 =-96:2+3 =
= -48+3=-45
9•(-20)/4= -180:4 = -45
-45 = -45
Умножим обе части уравнения на 4:
4((5х+4)/2 +3) = 4(9х/4)
2(5х+4) + 12 = 9х
10х + 8 + 12 = 9х
10х - 9х = -20
х = -20
Проверка
(5•(-20)+4)/2+3 =
= (-100+4)/2+3 =-96:2+3 =
= -48+3=-45
9•(-20)/4= -180:4 = -45
-45 = -45