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5*x+3*x=1096
=> x*(5+3) = 1096
=> x * 8 = 1096
=> x = 1096 : 8
=> x = 137
a) 5 × x + 3 × x =1096
x × ( 5 + 3 ) = 1096
x × 8 = 1096
x = 1096 :8
x = 137
b) 189 : x - 37 : x=8
( 189 - 37 ) : x = 8
152 : x = 8
x = 152 : 8
x = 19
ủng hộ nha
a , 5 X x + 3 X x = x X ( 5+3 ) = x X 8 = 1096
=> x = 1096 : 8 = 137.
b , 189 : x - 37 : x = ( 189-37 ) : x = 152 : x = 8
=> x = 152 : 8 = 19.
a. 5 x x + 3 x x = 1096
=> (5+3) x x = 1096
=> 8 x x = 1096
=> x =1096:8
=> x = 137
b. 115:x+37:x=8
=> (115+37):x=8
=> 152:x = 8
=> x = 152:8
=> x = 19
a)5 x X + 3 x X = 1096
X x (5+3) = 1096
X x 8 = 1096
X = 1096 : 8
X = 137
b) 115 : x + 37 : X = 8
( 115 + 37 ) : X = 8
152 : X = 8
X = 152 : 8
X = 19
a, \(\left(\frac{4}{9}.\frac{3}{7}\right).\frac{7}{4}=\frac{4}{9}\left(\frac{3}{7}.\frac{7}{4}\right)=\frac{4}{9}.\frac{3}{4}=\frac{3}{9}=\frac{1}{3}\)
b, \(\left(\frac{6}{5}.\frac{4}{5}\right).\frac{25}{16}=\frac{6}{5}\left(\frac{4}{5}.\frac{25}{16}\right)=\frac{6}{5}.\frac{5}{4}=\frac{6}{4}=\frac{3}{2}\)
c, \(\left(\frac{7}{8}.\frac{16}{9}\right).\frac{3}{14}=\frac{7}{8}\left(\frac{16}{9}.\frac{3}{14}\right)=\frac{7}{8}.\frac{8}{21}=\frac{7}{21}=\frac{1}{3}\)
a, (49.37).74=49(37.74)=49.34=39=13(49.37).74=49(37.74)=49.34=39=13
b, (65.45).2516=65(45.2516)=65.54=64=32(65.45).2516=65(45.2516)=65.54=64=32
c, (78.169).314=78(169.314)=78.821=721=13(78.169).314=78(169.314)=78.821=721=13
Nếu đúng thì k cho mình nhé bạn!( 4/9 x 3/7 ) x 7/4 = 4/9 x ( 3/7 x 7/4 ) =4/9 x 21/28 = 84/252
( 6/5 x 4/5 ) x 25/16 = ( 25/16 x 4/5 ) x 6/5 = 100/80 x 6/5 = 600/400
a) \(\frac{2}{3}.\frac{3}{4}.\frac{4}{5}:\frac{1}{5}\) b) \(\frac{1.2.3.4}{5.6.7.8}\)
\(=\frac{1}{2}.\frac{4}{5}:\frac{1}{5}\) \(=\frac{24}{1680}\)
\(=\frac{2}{5}.5\) \(=70\)
\(=2\)
c) \(\frac{2}{5}.\frac{3}{4}.\frac{5}{6}:\frac{3}{4}\)
\(=\frac{3}{10}.\frac{5}{6}.\frac{4}{3}\)
\(=\frac{1}{4}.\frac{4}{3}\)
\(=\frac{1}{3}\)
5*X + 3*X = 1096
=> (5+3)*X = 1096
=> 8X = 1096
=>X = 1096 : 8 = 137
5 x X + 3 x X =1096
<=> X x ( 5 + 3 ) = 1096
<=> X x 8 = 1096
=> X = 1096 : 8
X = 137