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\(a,C1:\left(75+25\right):5=100:5=20\\ C2:\left(75+25\right):5=75:5+25:5=15+5=20\)
\(b,C1:\left(84-24\right):4=60:4=15\\ C2\left(84-24\right):4=84:4-24:4=21-6=15\)
\(c,C1:\left(123+456\right):3=579:3=193\\ C2:\left(123+456\right):3=123:3+456:3=41+152=193\)
\(d,C1:\left(936-306\right):6=630:6=105\\C2:\left(936-306\right) :6=936:6-306:6=156-51=105\)
a,(75 + 25) : 5
C1: 100 : 5 = 20
C2: 75 : 5 + 25 : 5 = 15 + 5 = 20
b,(84 - 24) : 4
C1: 60 : 4 = 15
C2: 84 : 4 - 24 : 4 = 21 - 6 = 15
c,(123 + 456) : 3
C1: 579 : 3 = 193
C2: 123 : 3 + 456 : 3 = 41 + 152 = 193
d,(936 - 306) : 6
C1: 630 : 6 = 105
C2: 936 : 6 - 306 : 6 = 156 - 51 = 105
y x 500 = 780 000
y = 780 000 : 500
y = 1560
y x 120 = 12000
y = 12000 : 120
y = 100
y : 145 = 318
y = 318 x 145
y = 46110
y : 213 = 456
y = 456 x 213
y= 97128
y x 70 = 238
y = 238 : 70
y = 3.4
y x 78 = 936
y = 936 : 78
y = 12
462 : y = 66
y = 462 : 66
y = 7
709 : y = 82
y = 709 : 82
y = 8.64634146341
y x 500 = 780 000
y = 780 000 : 500
y = 1560
y x 120 = 12000
y = 12000 : 120
y = 100
y : 145 = 318
y = 318 x 145
y = 46110
y : 213 = 456
y = 456 x 213
y= 97128
y x 70 = 238
y = 238 : 70
y = 3.4
y x 78 = 936
y = 936 : 78
y = 12
462 : y = 66
y = 462 : 66
y = 7
709 : y = 82
y = 709 : 82
y = 8.64634146341
936 + ( 49 : x ) = 943
49 : x = 943 - 936
49 : x = 7
x = 49 : 7
x = 7
936+(49:x)=943
49 : x = 943 -936
49 : x = 7
x = 49 : 7
x = 7
\(x\times16=936+x\times12\\ x\times16-x\times12=936\\ x\times\left(16-12\right)=936\\ x\times4=936\\ x=234\)
`(x+1976) : 9 = 936`
`=> x+ 1976 = 936 xx 9`
`=> x+ 1976 = 8424`
`=>x=8424 -1976`
`=>x=6448`
`(x+1976):9=936`
`=>x+1976=936xx9`
`=>x+1976=8424`
`=>x=8424-1976`
`=>x=6448`
\(936-\left(4.x+24\right)=72\)
\(4.x+24=72+936\)
\(4.x+24=1008\)
\(4.x=1008-24\)
\(4.x=984\)
\(x=984:4\)
\(x=246\)
936-(4x+24)=72
4x+24=936-72
4x+24=864
4x=864-24
4x=840
x=840:4
x=210
X x 12 = 936 + X x 8
X x 12 - X x 8 = 936
X x ( 12 - 8 ) = 936
X x 4 = 936
X = 936 : 4
X = 234
Ta có:
X x 12 = 936 + X x 8
=> X x 12 - X x 8 = 936
=> X x 4 = 936
=> X = 936 : 4 = 234
Chúc bạn học tốt !!! ^^
[ x-236×6]×8=936-
x-236×6 =936:8
x-236×6. = 117
72 – (4x + 24) = 936
4x+24=936-72
4x+24=864
4x =864-24
4x = 840
x = 840:4
x = 210.
Vậy x=210.
4x + 24 = 72 - 936
4x + 24 = -864
4x = -864 - 24
4x = -888
x = -888 : 4
x = -222
936 - 936 -x + 456 = 456 cho tui 1 cái đúng nha bạn
kết quả bằng 456