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\(\left(x-2\right)\times3-270:45=120\)
\(\Rightarrow3x-6-6=120\)
\(\Rightarrow3x=120+6+6\)
\(\Rightarrow3x=132\)
\(\Rightarrow x=44\)
180 - ( x - 45 ) : 2 = 120
(x-45):2 =180-120
(x-45):2 =60
x-45 =60.2
x-45 =120
x =120+45
x =165
mjk nhé
180 - ( x - 45 ) : 2 = 120
( x - 45 ) : 2 = 180 - 120
( x - 45 ) : 2 = 60
x - 45 = 60 x 2
x - 45 = 120
x = 120 + 45
x = 165
\(\left(x-2\right)\cdot3-270:45=120\)
\(\left(x-2\right)\cdot3-6=120\)
\(\left(x-2\right)\cdot3=120+6\)
\(\left(x-2\right)\cdot3=126\)
\(x-2=126:3\)
\(x-2=42\)
\(x=42+2\)
\(x=44\)
( x - 2 ) . 3 - 270 : 45 = 120
( x - 2 ) . 3 - 6 = 120
( x - 2 ) . 3 = 120 + 6
( x - 2 ) . 3 = 126
x - 2 = 126 :3
x - 2 = 42
x = 42 + 2
x = 44
\(180-\left(x-45\right)\div2=120\)
\(\left(x-45\right)\div2=180-120\)
\(\left(x-45\right)\div2=60\)
\(x-45=60\times2\)
\(x-45=120\)
\(x=120+45\)
\(x=165\)
\(\left(2009-x\right)\div29+32=100\)
\(\left(2009-x\right)\div29=100-32\)
\(\left(2009-x\right)\div29=68\)
\(2009-x=68\times29\)
\(2009-x=1972\)
\(x=2009-1972\)
\(x=37\)
\(\left(x-2\right)\times3-270\div45=120\)
\(\left(x-2\right)\times3-6=120\)
\(\left(x-2\right)\times3=120+6\)
\(\left(x-2\right)\times3 =126\)
\(x-2=126\div3\)
\(x-2=42\)
\(x=42+2\)
\(x=44\)
\(\left(x+0,2\right)+\left(x+0,7\right)+\left(x+1,2\right)+...+\left(x+4,2\right)+\left(x+4,7\right)=65,5\)
\(\left(x+x+x+..+x+x\right)+\left(0,2+0,7+1,2+...+4,2+4,7\right)=65,5\)
\(10x+\frac{\left(0,2+4,7\right)\times10}{2}=65,5\)
\(10x+24,5=65,5\)
\(10x=65,5-24,5\)
\(10x=41\)
\(\Rightarrow x=4,1\)
\(180-\left(x-45\right):2=120\)
\(\Rightarrow\left(x-45\right):2=180-120=60\)
\(\Rightarrow x-45=60\times2=120\)
\(\Rightarrow x=120+45=165\)
Vậy x= 165
=> (x - 45) : 2 = 180 - 120 = 60
=> x - 45 = 60 x 2 = 120
=> x = 120 + 45 = 165
\(\text{(x-45) : 2}=780-120\)
=>\(x-45=660.2\)
=>\(x=1320+45\)
=>\(x=1365\)
\(\text{Vậy giá trị x cần tìm là: x=1365}\)
780 - ( x - 45 ) : 2 = 120
( x - 45 ) : 2 = 780 - 120
( x - 45 ) : 2 = 660
( x - 45 ) = 660 . 2
( x - 45 ) = 1320
x = 1320 + 45
x = 1365
~hok tốt~
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