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a,486:x-126:x=6
=>(486-126):x=6
=>360:x=6
=>x=360:6
=>x=60
b,725:x+175:x=5
=>(725+175):x=5
=>900:x=5
=>x=900:5
=>x=180
486:x-126:x=6
(486-126):x=6
360:x=6
x=360:6
x=60
725:x+175:x=5
(725+175):x=5
900:x=5
x=900:5
x=180
( 486 - 126 ) : x = 6
360 : x = 6
x = 360 : 6
x = 60
:)))
[(2+y)x81-3530]=714:21
[(2+y)x81-3530]=34
(2+y)x81=34+3530
(2+y)x81=3564
2+y=3564:81
2+y=44
y=44-2
y=42
486÷x-126÷x=6
(486-126) ÷ x = 6
360 ÷ x = 6
x = 360 ÷ 6
x = 60
a)501.(x-694)=164829
x-694 =164829:501
x-694 =329
x =329+694
x =1023
Vậy x=1023
b)(x.81+2.81-3530).21=714
x.81+2.81-3530 =714:21
x.81+2.81-3530 =34
81.(x+2) =34+3530
81.(x+2) =3564
x+2 =3564:81
x+2 =44
x =44-2
x =42
Vậy x=42
246:x+34:x=5
(246+34):x=5
280:x=5
x=280:5
x=56
360:x-126:x=6
(360-126):x=6
234:x=6
x=234:6
x=39
a) 162 : 𝑥 + 216 : 𝑥 = 6
(162 + 216) : x = 6
378 : x = 6
x = 378 : 6
x = 63
b) 602 : x + 123 x 2 = 253
602 : x + 246 = 253
602 : x = 253 - 246
602 : x = 7
x = 602 : 7
x = 86
c) 486 : x - 126 :x = 6
(486-126) : x = 6
360 : x = 6
x = 360 : 6
x = 60
d) 725 : x + 175 : x = 5
(725 + 175) : x = 5
900 : x = 5
x = 900 : 5
x = 180
a)\(162:x+216:x=6\)
⇔\(\left(162+216\right):x=6\)
⇔\(378:x=6\)
⇔\(x=63\)
b)\(602:x+123.2=253\)
⇔\(602:x+246=253\)
⇔\(602:x=7\)
⇔\(x=86\)
c)\(486:x-126:x=6\)
⇔\(\left(486-126\right):x=6\)
⇔\(360:x=6\)
⇔\(x=60\)
d)\(725:x+175:x=5\)
⇔\(\left(725+175\right):x=5\)
⇔\(900:x=5\)
⇔\(x=180\)
\(a.162:x+216:x=6\) \(b.602:x+123x2=253\)
\(\left(162+216\right):x=6\) \(602:x+246=253\)
\(378:x=6\) \(602:x=253-246\)
\(x=378:6=63\) \(602:x=7\)
\(x=602:7=86\)
\(c.486:x-126:x=6\) \(d.725:x+175:x=5\)
\(\left(486-126\right):x=6\) \(\left(725+175\right):x=5\)
\(360:x=6\) \(900:x=5\)
\(x=360:6=60\) \(x=900:5=180\)
Tìm x : 486 : x – 126 : x = 6
x = 81
x = 21
x = 60
x = 2160
\(x=60\)