X x 7,25+2,75x89=149,87x5
tính nhanh
a) 7,25 x 6,93 + 7,25 x 2,07 + 7,25
b) 24,8 : 0,5 + 24,8 x 8
a) 7,25×6,93+7,25×2,07+7,25×1
=7,25×(6,93+2,07+1)
=7,25×10
=72,5
b) 24,8:0,5+24,8×8
=24,8×2+24,8×8
=24,8×(2+8)
=24,8×10
=248
Tính nhanh :
7,25 x 6,93 - 7,25 x 1,93
Giúp mình với các bạn ơi !
=7,25*\(\left(6,93-1,93\right)\)
=7,25*5
=3625
7,25 x X + 27,5 x X = 30
\(\Leftrightarrow x\times\left(7,25+27,5\right)=30\)
\(\Leftrightarrow x=\dfrac{30}{34,75}=\dfrac{120}{139}\)
(7.25+27.5) x X = 30
34.75 x X = 30
X = 30 : 34.75
X= 120/139
20,49 + x = 7,25 x 6,28
Gấppppppppppppppppp20,49 + x = 7,25 x 6,28
20,49 + x = 45,53
x = 45,53 - 20,49
x = 25,04
7,25 x (X + 56 ) = 58
7,25 x (X + 56 ) = 58
x + 56 = 58 : 7,25
x + 56 = 8
x = 8 - 56
x = -48
`x xx7,25 + x xx 7,25=120`
`x+(7,25+7,25)=120`
`x+14,5=120`
`x=120-14,5`
`x=105,5`
`x xx7,25+x xx7,25=120->x xx 7,25+x xx 2,75=120`
`x xx 7,25+x xx 2,75=120`
`x xx(7,25+2,75)=120`
`x xx 10=120`
`x=120:10`
`x=12`
`x xx 7,25 + x xx 7,25 = 120`
`x xx (7,25 +7,25)=120`
`x xx 14,5=120`
`x=120:14,5`
`x=240/29`
7,25 x ( X +56) = 58
Tìm X
bằng-48
Tìm X
246,5 : (X x 5) = 7,25
246,5 : (X x 5) = 7,25
X x 5 = 246,5 : 7,25
X x 5 = 34
X = 34 : 5
X = 6,8
Xx5=246,5:7,25
Xx5=34
X =34:5
X =6,8
5,67 : 0.8 +5,67 x 2,5 -5,67 +5,67 x 7,25