7,25 x (X + 56 ) = 58
7,25 x ( X +56) = 58
Tìm X
bằng-48
(x +2,62 ) x 1,8 = 6,3
7,25 x ( x + 5,6) = 58
( x + 2,62 ) x 1,8 = 6,3
x + 2,62 = 6,3 : 1,8
x + 2,62 = 3,5
x = 3,5 - 2,62
x = 0,88
7,25 x ( x + 5,6 ) = 58
x + 5,6 = 58 : 7,25
x + 5,6 = 8
x = 8 - 5,6
x = 2,4
(x+2,62)x1,8=6,3
x+2,62=6,3:1,8
x+2,62=3,5
x =3,5-2,62
x =0,88
7,25 x (x+5,6)=58
x+5,6=58:7,25
x+5,6=8
x =8-5,6
x =2,4
Tính nhanh
56 x 58 + 58 x 43 + 58
= 56 x 58 + 58 x 43 + 58+1
=58x[56 +43+1]
= 58 x100=
5800
56 x 58 + 58 x 43 + 58
= 56 x 58 + 58 x 43 + 58 x 1
= ( 56 + 43 + 1 ) x 58
= 100 x 58
= 5800
56 x 58 + 58 x 43 + 58
= 58 x ( 56 + 43 + 1 )
= 58 x 100
=5800
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
7,25 nhân (y+5,6)=58
Trả lời :
7,25 x (y + 5,6 ) = 58
y + 5,6 = 58 : 7,25
y + 5,6 = 8
y = 8 - 5,6
y = 2,4
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7,25.(y+5,6)=58
y+5,6=58:7,25
y+5,6=8
y=8-5,6
y=2,4
Tìm y:
a) 7 , 25 × y + 5 , 6 = 58
b) 470 , 04 : y = 24
a) 7 , 25 × y + 5 , 6 = 58
y + 5 , 6 = 58 : 7 , 25
y = 8 − 5 , 6
y = 2 , 4
b) 470 , 04 : y = 24
y = 470 , 04 : 24
y = 19 , 585
12 x 25 x 35 x 56 58
12 x 25 x 35 x 5658 = 300 x 35 x 5658
= 10500 x 5658
= 59409000
Mik đàu tiên đấy , click cho mik nha !!!!!!!!!!!!!!!!!!
(x+1/55 + x+2/56 + x+3/57 + x+4/58)-4=0
\(\left(\dfrac{x+1}{55}+\dfrac{x+2}{56}+\dfrac{x+3}{57}+\dfrac{x+4}{58}\right)-4=0\)
<=>\(\dfrac{x+1}{55}+\dfrac{x+2}{56}+\dfrac{x+3}{57}+\dfrac{x+4}{58}=4\)
<=>\(\dfrac{x+1}{55}-1+\dfrac{x+2}{56}-1+\dfrac{x+3}{57}+\dfrac{x+4}{58}-1=4-4\)
<=>\(\dfrac{x+1}{55}-\dfrac{55}{55}+\dfrac{x+2}{56}-\dfrac{56}{56}+\dfrac{x+3}{57}-\dfrac{57}{57}+\dfrac{x+4}{58}-\dfrac{58}{58}=0\)
<=>\(\dfrac{x-54}{55}+\dfrac{x-54}{56}+\dfrac{x-54}{57}+\dfrac{x-54}{58}=0\)
<=>\(\left(x-54\right)\left(\dfrac{1}{55}+\dfrac{1}{56}+\dfrac{1}{57}+\dfrac{1}{58}\right)=0\)
<=>x-54=0
<=>x=54
vậy phương trình có tập nghiệm là S={54}
=>\(\left(\dfrac{x+1}{55}-1\right)+\left(\dfrac{x+2}{56}-1\right)+\left(\dfrac{x+3}{57}-1\right)+\left(\dfrac{x+4}{58}-1\right)=0\)
=>x-54=0
=>x=54
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