340-[175=(37+x)]:22=328
Tìm x:
340=85.4=\(\frac{x+175}{5}\)+30
(-34+100)-56
10-(47+30)
(37-58) - (27-158)
-(27-168)+(37-68)
(22-225)-(75-168)
254-(175+146+125)
X x 78 + x x 22 = 328
\(x\times78+x\times22=328\)
\(x\times\left(78+22\right)=328\)
\(x\times100=328\)
\(x=328\div100\)
\(x=3,28\)
X x 78 + X x 22 = 328
X x (78 + 22) = 328
X x 100 = 328
X =328 :100
X = 3,28
\(x\) \(\times\) 78 + \(x\) \(\times\) 22 = 328
\(x\) \(\times\) ( 78 + 22 ) = 328
\(x\) \(\times\) 100 = 328
\(x\) = 328 \(\div\) 100
\(x\) = 3,28
tìm x thuộc Z
-4(-2x-37)+7(-x+75)=-(-328)
\(-4\left(-2x-37\right)+7\left(-x+75\right)=-\left(-328\right)\)
\(8x+148-7x+525=328\)
\(x+673=328\)
\(x=-345\)
vậy \(x=-345\)
Tìm x
328-[x-(33.32-29:22).2]=274
\(328-\left[x-\left(33.32-29:22\right).2\right]=274\)
\(328-\left[x-\left(1056-\frac{29}{22}\right).2\right]=274\)
\(x-2112+\frac{29}{11}=328-274\)
\(x-2112+\frac{29}{11}=54\)
\(x=54+2112-\frac{29}{11}\)
\(x=\frac{23797}{11}\)
vậy \(x=\frac{23797}{11}\)
Bài 1 : Tìm x
a) ( 2x x +28 ) + 55 = 175 - b)41-(2x x -5)=22 - c) ( 5x x +16):3 =7
Bài 2.Tính
1) 2+37+135+58+63 - 2) 25x17x8x4x125 - 3) 36x23+62x23+46 - 4) 42x167-42x67
Ai giải giùm em với ạ em cảm ơn^^
tính nhanh
37 x 46 + 37 x 51 + 111
172 x 47 + 86 x8 - 34 x4
35 x 215 - 35 x 210 -175
48 x 56 + 28 x104
\(37\times46+37\times51+111\)
\(=37\times46+37\times51+37\times3\)
\(=37\times\left(46+51+3\right)\)
\(=37\times100\)
\(=3700\)
------------
\(172\times47+86\times8-34\times4\)
\(=172\times47+172\times4-34\times4\)
\(=172\times\left(47+4\right)-34\times4\)
\(=172\times51-34\times4\)
\(=172\times3\times17-17\times2\times4\)
\(=17\times\left(172\times3-2\times4\right)\)
\(=17\times\left(516-8\right)\)
\(=17\times508\)
\(=8636\)
------------
\(35\times215-35\times200-175\)
\(=35\times215-35\times200-35\times5\)
\(=35\times\left(215-200-5\right)\)
\(=35\times10\)
\(=350\)
------------
\(48\times56+28\times104\)
\(=48\times2\times28+28\times104\)
\(=28\times\left(48\times2+104\right)\)
\(=28\times200\)
\(=5600\)
Bài 2: Thực hiện phép tính (tính hợp lí nếu có thể) a, 4 . 52 – 18 : 32 b, 32. 22 - 32 . 19 c, 24 . 5 - [131- (13 - 4)2] d, 100: {250 : [450 - (4 . 53 – 22 . 25)]} e, 23 . 15 – [115 - (12 - 5)2] f, 30.{175 : [355 - (135 + 37 . 5)]} g, 5871: [928 – ( 247 - 82) . 5] + 21750 |
Đáp Án
a)52:4x3+2x52
=13x3+2x52
=39+104
=143
b)5x42-18:32
=100-0.5625
=99.4375
của bạn nha
Bài 1 tính nhanh
A) 37 x 46 + 37 x 51 + 111
B) 35x 215 -35 x 210 - 175
c) 172 x 47 + 86 x 8 - 34 x4
d) 48 x 56 + 28 x104
a) \(37\times46+37\times51+111\)
\(=37\times46+37\times51+37\times3\)
\(=37\times\left(46+51+3\right)\)
\(=37\times100\)
\(=3700\)
b) \(35\times215-35\times210-175\)
\(=35\times215-35\times210-35\times5\)
\(=35\times\left(215-210-5\right)\)
\(=35\times0\)
\(=0\)
c) \(172\times47+86\times8-34\times4\)
\(=4\times\left(43\times47+86\times2-34\right)\)
\(=4\times\left(2021+172-34\right)\)
\(=4\times2159\)
\(=8636\)
d) \(48\times56+28\times104\)
\(=48\times56+56\times52\)
\(=56\times\left(48+52\right)\)
\(=56\times100\)
\(=5600\)