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yx134-yx24-yx10=710000
=>yx(134-24-10) =710000
=>yx100 =710000
y =710000:100
y =7100
chúc học tốt
y x 134 - y x 24 - y x 10 = 710000
y x (134-24-10) = 710000
y x 100 = 710000
y = 710000 : 100
y = 7100
Ta có:
y x 134 - y x 24 - y x 10 = 710 000
y x ( 134 - 24 - 10 ) = 710 000
y x 100 = 710 000
y = 710 000 : 100
y = 7 100
y * ( 134 - 24 - 10) = 710000
y * 100 = 710000
y = 710000 : 100
y = 7100
\(\Rightarrow y\times\left(134-24-10\right)=710000\)
\(\Rightarrow y\times100=710000\)
\(\Rightarrow y=710000:100\)
\(\Rightarrow y=7100\)
Vậy y=7100
y x 123 - y x 10=710000
y x (123-10)=710000
y x 113=710000
y =710000:113
y=6283(dư 21)
\(y\times123-y\times10=710000 \)
\(\Rightarrow y\times\left(123-10\right)=710000\)
\(\Rightarrow y\times113=710000\)
\(\Rightarrow y=710000:113\)
\(\Rightarrow y=.........\)
1)\(y\times7:5+4\times8=134\)
\(\Leftrightarrow y\times7:5+32=134\)
\(\Leftrightarrow y\times7:5=102\)
\(\Leftrightarrow y\times7=510\)
\(\Leftrightarrow y=72,86\)
2) \(\dfrac{1}{4}:0,25-\dfrac{1}{8}:0,125+\dfrac{1}{2}:0,5-\dfrac{1}{10}\)
\(=0,25:0,25-0,125:0,125+0,5:0,5-\dfrac{1}{10}\)
\(=1-1+1-\dfrac{1}{10}\)
\(=\dfrac{9}{10}\)
a)100-9:(372:3.y-1)-14=83
<=>100-9:(124y-1)-14=83
<=>86-9:(124y-1)=83
<=>9:(124y-1)=3
<=>124y-1=3
<=>124y=4
<=>y=\(\frac{1}{31}\approx0,3223\)
b)7260-120:24.y+924=528,3
<=>8184-5y=528,3
<=>5y=7655,7
<=>y=1531,14
c)2000-52:(615:3:y-15)-14=1984
<=>1986-52:(205:y-15)=1984
<=>52:(205:y-15)=2
<=>205:y-15=26
<=>205:y=41
<=>y=5
d)y+y.1/3+5/18=7/18
<=>4/3y=1/9
<=>y=1/12
e)13/15-(5/21+y)7/12=7/10
<=>7/12.(5/21+y)=1/6
<=>5/36+7/12y=1/6
<=>7/12y=1/36
<=>y=1/21\(\approx\)0,4762
h)y+2.y+3.y+...+10.y=49,5
<=>55y=49,5
<=>y=0,9
i)y.(1975/8.9+1885/9.10+1755/10.11+1579/11.12)=1/24
<=>7991,364899y=1/24
<=>y=33/6329161
tích nha mỏi tay quá
y x 134 - y x 24 - y x 10 = 710000
y x ( 134 - 24 - 10 ) = 710000
y x 100 = 710000
y = 7100
:))
y x 134 - y x 24 - y x 10 = 710000
= y x (134 - 24 - 10) = 710000
= y x 100 = 710000
y = 710000 : 100
y = 7100