. Tìm y:
a. 162 : y + 216 : y = 6
b. 602 : y + 123 x 2 = 253
c. 8 x (15720 – y) = 51784
8 x (15720 – y) = 51784
15720 – y=51784 : 8
15720 – y= 6473
y=9247
15720 – y = 51784 : 8
15720 – y = 6473
y = 9247
Tìm x
a) 162 : x + 216 : x = 6
b) 602 : x + 123 x 2 = 253
c) 486 : x - 126 :x = 6
d) 725 : x + 175 : x = 5
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
Tìm x
a) 162 : x + 216 : x = 6
b) 602 : x + 123 x 2 = 253
c) 486 : x - 126 :x = 6
d) 725 : x + 175 : x = 5
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)\(725:x+175:x=5\)
⇔\(\left(725+175\right):x=5\)
⇔\(900:x=5\)
⇔\(x=180\)
\(a.162:x+216:x=6\) \(b.602:x+123x2=253\)
\(\left(162+216\right):x=6\) \(602:x+246=253\)
\(378:x=6\) \(602:x=253-246\)
\(x=378:6=63\) \(602:x=7\)
\(x=602:7=86\)
\(c.486:x-126:x=6\) \(d.725:x+175:x=5\)
\(\left(486-126\right):x=6\) \(\left(725+175\right):x=5\)
\(360:x=6\) \(900:x=5\)
\(x=360:6=60\) \(x=900:5=180\)
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
Học tốt !
( x + 423 ) nhân 6 = 33804
8 nhân ( 15720 - x ) = 51784
( x + 423 ) x 6 = 33804
x + 423 = 33804 : 6
x + 423 = 5634
x = 5634 - 423
x = 5211
8 x ( 15720 - x ) = 51784
15720 - x = 51784 : 8
15720 - x = 6473
x = 6473 + 15720
x = 22193
1) ( x + 423 ) . 6 = 33804
x + 423 = 33804 : 6
x + 423 = 5634
x = 5634 - 423
x = 5211
2) 8 . ( 15720 - x ) = 51784
( 15720 - x ) = 51784 : 8
( 15720 - x ) = 6473
x = 15720 - 6473
x = 9247
( x + 423 ) x 6 = 33804
x + 423 = 33804 : 6
x + 423 = 5634
x = 5634 - 423
x = 5211
8 x ( 15720 - x ) = 51784
15720 - x = 51784 : 8
15720 - x = 6473
x = 15720 - 6473
x = 9247
tìm y:
a, y x 27 + y x 30 + y x 44 - y = 10500
b, y x 285 + 115 x y = 400
\(a,y\times27+y\times30+y\times44-y=10500\\\Rightarrow y\times\left(27+30+44-1\right)=10500\\ \Rightarrow y\times100=10500\\ \Rightarrow y=10500:100\\ \Rightarrow y=105\\ b,y\times285+115\times y=400\\ \Rightarrow y\times\left(285+115\right)=40\\ \Rightarrow y\times400=400\\ y=400:400\\ \Rightarrow y=1\)
\(a,\Rightarrow y\times\left(27+30+44-1\right)=10500\\ \Rightarrow y\times100=10500\\ \Rightarrow y=105\\ b,\Rightarrow y\times\left(285+115\right)=400\\ \Rightarrow y\times400=400\\ \Rightarrow y=1\)
Tìm y:
a) y x 2,8 + 5,2 x y = 48
b) y x 12,25 – y + y x 2,75 = 1050
\(a,y\times2,8+5,2\times y=48\\ y\times\left(2,8+5,2\right)=48\\ y\times8=48\\ y=\dfrac{48}{8}=6\\ ---\\ b,y\times12,25-y+y\times2,75=1050\\ y\times\left(12,25-1+2,75\right)=1050\\ y\times14=1050\\ y=\dfrac{1050}{14}=75\)
a: \(y\cdot2,8+y\cdot5,2=48\)
=>\(y\left(2,8+5,2\right)=48\)
=>\(8y=48\)
=>\(y=\dfrac{48}{8}=6\)
b: \(y\cdot12,25-y+y\cdot2,75=1050\)
=>\(y\left(12,25-1+2,75\right)=1050\)
=>\(y\cdot14=1050\)
=>\(y=\dfrac{1050}{14}=75\)
Tìm y:
a, y + 847 x 2 = 1953 - 74 b, y : (7 x 18) = 5839 + 8591
Tìm y:
\(a,y+847\times2=1953-74\\ y+847\times2=1879\\ y+1694=1897\\ y=1897-1694\\ y=185\\ b,y:\left(7\times18\right)=5839+8591\\ y:126=14430\\ y=14430\times126\\ y=1818180.\)
a/ y + 847 x 2 = 1953 - 74
y + 1694 = 1879
y = 1879 - 1694
y = 185
b/y : (7 x 18) = 5839 + 8591
y : 126 = 14430
y = 14430 x 126
y = 1818180
#AvoidMe
a. y + 847 x 2 = 1953 - 74
y + 1694 = 1879
y = 1879 - 1694
y = 185
b. y : (7 x 18) = 5839 + 8591
y : 126 = 14430
y = 14430 x 126
y = 1818180
602:x+123*2=253
602:x+123x2=253
602:x+246=253
602:x=253-246
602:x=7
x=602:7
x=86
Tìm y:
a)y x 7= 5,6% b)42% : y= 6
a: =>y=0,056:7=0,008
b: =>y=21/50:6=21/300=0,07