24 x 36 + 0,24 x 36 + 24,24 x 64
=
=
=
A,3(X-5)+6=36
B,200-8(X+7)=24
C,(X-890).(74-X)=0
D,(31-X)(X-64)=0
36 x 28 + 36 x 82 + 64 x 69 + 64 x 41 = ?
=36x(28+82)+64x(69+41)
=36x110+64x110
=110x(26+64)
=110x100
=11000
**** bn hiền
36x28+36x82+64x69+64x41
=36x(28+82)+64x(69+41)
=36x110+64x110
=110x(36+64)
=110x100
=11000
36 x ( 28 + 82 ) + 64 x ( 69 + 41 ) = ( 36 + 64 ) x (28 + 82) = 100 x 110 = 11000
a,3.(x-5)+6=36
b,200-8.(x+7)=24
c,(x-890).(74-x)=0
d,(31-x).(x-64)=0
làm giúp mình vs ạ
mình đang cần gấp
a) \(3\left(x-5\right)+6=36\)
\(\Rightarrow3\cdot\left(x-5\right)=36-6\)
\(\Rightarrow3\cdot\left(x-5\right)=30\)
\(\Rightarrow x-5=10\)
\(\Rightarrow x=10+5\)
\(\Rightarrow x=15\)
b) \(200-8\cdot\left(x+7\right)=24\)
\(\Rightarrow8\cdot\left(x+7\right)=200-24\)
\(\Rightarrow8\cdot\left(x+7\right)=176\)
\(\Rightarrow x+7=\dfrac{176}{8}\)
\(\Rightarrow x+7=22\)
\(\Rightarrow x=22-7\)
\(\Rightarrow x=15\)
c) \(\left(x-890\right)\left(74-x\right)=0\)
+) \(x-890=0\)
\(\Rightarrow x=890\)
+) \(74-x=0\)
\(\Rightarrow x=74\)
d) \(\left(31-x\right)\cdot\left(x-64\right)=0\)
+) \(31-x=0\)
\(\Rightarrow x=31\)
+) \(x-64=0\)
\(\Rightarrow x=64\)
Tính nhanh:
36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
=36x(28+82)+64x(69+41)
=36x110+64x110
=110x(36+64)
110x100
=11000
36x28+36x82+64x69+64x41
=36x(28+82)+64x(69+41)
=36x110+64x110
=110x(36+64)
=110x100
=11 000
= 36 x ( 28 + 82 ) + 64 x ( 69 + 41 )
= 36 x 110 + 64 x 110
= ( 36 + 64 ) x 110
= 100 x 110
11000
tính nhanh : a ) 2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3 b ) 36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
1)Đơn giản biểu thức
a) -(x-18) - (4x+64) - 16
b) x - (-36) - (-4-2x) +24
c) x + (-23) + (13+2x) + {(-17)+57}
a) -x+18-4x-64-16=-x-4x+18-64-16=-5x-62
b) x+36+4+2x+24=x+2x+36+4+24=3x+64
c) x-23+13+2x-17+57=x+2x-23+13-17+57=3x+29
Tick nha
36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
Ai cmt thì cmt luôn cách làm nhé =)))
36 x 28 + 36 x 82 + 64 x 69 + 64 x 41 = 36 x ( 28 + 82 ) + 64 x ( 69 + 41 )
= 36 x 110 + 64 x 110
= 110 x ( 36 + 64 )
= 110 x 100
= 11000
tk nhé !
36x(28+82) + 64x(69+41)
=36x110 + 64x 110
=110x (36+64)
=110x100
=11000
36 x 28 + 36 x 82 + 64 x 69 + 64 x 41.
= 36 x (28 + 82) + 64 x (69 + 41)
= 36 x 110 + 64 x 110
= 110 x (36 + 64)
= 110 x 100
= 11000.
Khoanh vào đáp án đúng :
1:Đúng ghi Đ, sai ghi S:
a) (36 x 14) : 3 = 44 ....
b) (64 x 32 ) :5 = 70 ....
c) (12 x 24 ) :6= 256 ....
d) (50 x 7 ) :5 = 70 .....
Tính bằng cách thuận tiện nhất :
a. 67 x 126 - 67 x 84 - 41 x 67 - 67
b. 36 x 2 x 7 + 7 x 28
c. 24 x 18 + 12 x 64
Tính bằng cách thuận tiện nhất :
a. 67 x 126 - 67 x 84 - 41 x 67 - 67
= 67 x 126 - 67 x 84 - 41 x 67 - 67 x 1
= 67 ( 126 - 84 - 41 - 1 )
= 67 x 0
=0
b. 36 x 2 x 2 + 7 x 28
= 2 ( 36 x 2 + 14 x 7 )
= 2 x 170
= 340
c. 24 x 18 + 12 x 64
= 12 x 2 x 18 + 12 x 64
= 12 ( 2 x 18 + 64)
= 12 x 100
= 1200
a. 67 x 126 - 67 x 84 - 41 x 67 - 67
= 67 x 126 - 67 x 84 - 41 x 67 - 67 x 1
= 67 ( 126 - 84 - 41 - 1 )
= 67 x 0
=0
b. 36 x 2 x 2 + 7 x 28
= 2 ( 36 x 2 + 14 x 7 )
= 2 x 170
= 340
c. 24 x 18 + 12 x 64
= 12 x 2 x 18 + 12 x 64
= 12 ( 2 x 18 + 64)
= 12 x 100
= 1200
67x126-67x84-41x67-67
=67x126-67x84-41x67-67x1
=67x(126-84-41-1)
=67x0
=0
36x2x7+7x28
=2(36x2+14x7)
=2x170
=340
24x18+12x64
=12x2x18+12x64
=12(2x18+64)
=12x100
=1200