45 + x = 10
10 + 10 x 45 + 10 x 54 = ?
10 + 10 x 45 + 10 x 54
= 10 x 1 + 10 x 45 + 10 x 54
= 10 x (1 + 45 + 54)
= 10 x 100
= 1000
10 + 10 x 45 + 10 x 54
= 10 x 1 + 10 x 45 + 10 x 54
= 10 x ( 1 + 45 + 54 )
= 10 x100
= 1000
10+10x45+10x54=10x(1+45+54)=10x100=1000
nhanh nhất mình k cho
45 x 64 + 45 x 26 x 45 + 10
45 x 64 + 45 x 26 x 45 + 10
= 45 x ( 64+26+10 )
= 45 x 100
= 4500
45 x 64 + 45 x 26 x 45 + 10
= 45 x ( 64 + 26 ) x 45 + 10
= 45 x 90 x 45 + 10
Giúp Mình Vs M.N ơi
10+2.x=45:45
\(10+2x=45\div4^5\)
\(10+2x=45\div1024\)
\(10+2x=\dfrac{45}{1024}\)
\(2x=\dfrac{45}{1024}-10\)
\(2x=-\dfrac{10195}{1024}\)
\(x=-\dfrac{10195}{1024}:2=-\dfrac{10195}{2048}\)
Tìm x, biết:
a) 3.x + 15 = 45
b) 45 - 5 . (x + 3) = 10
3.x+15=45 45-5.(x+3)=10
=>3.x=30 =>5.(x+3)=35
=>x=10 =>x+3=7
=>x=4
a) 3x + 15 = 45
<=> 3x = 30
<=> x = 10
b) 45 - 5(x+3) = 10
<=> 5(x+3) = 35
<=> x + 3 = 7
<=> x = 4
a) 3.x + 15 = 45
3.x = 45 - 15
3.x = 30
x = 30 : 3
x = 10
Tìm số tự nhiên x, biết:
a)35 -x < 35 - 5
b) x - 10 < 35 - 10
c) x -10 < 45
a, 35 - \(x\) < 35 - 5
35 - \(x\) < 30
\(x\) < 35 - 30
\(x\) < 5
\(x\) = 1; 2; 3; 4; 5
b, \(x\) - 10 < 35 - 10
\(x\) - 10 < 15
\(x\) < 15 + 10
\(x\) < 25
\(x\) = 0; 1; 2; 3; 4; 5; ....;24
c, \(x\) - 10 < 45
\(x\) < 45 + 10
\(x\) < 55
\(x\) = 0; 1; 2; 3; 4;...;54
tính:
1 + 3 + 6 + 10 +....+ 45 + 55/ 1 x 10 + 2 x 9 + 3 x 8 +...+ 8 x 3 + 9 x 2 + 10 x 1
5 x X + 3 x {10 - x} + x= 45
5. x+3.10-3.x+x=45
5.x+30-3.x+x.1=45
x.(5-3+1)=45-30
x.3=15
x=15:3
x=5
Dung thi k de ung ho minh nha!!!
\(5.x+3\left(10-x\right)+x=45\)
\(5x+30-3x+x=45\)
\(3x=15\)
\(x=5\)
Tìm x:
70-45:{[10-8:(10:x-3)+2]+7}=67
đúng nhưng phải có cách trình bày chứ!