129 + (-20) + (-320)
(x + 129):4 = 844
(x - 452) x 5 = 255
(320 + x) - 102 =197
viết chi tiết
= 3184
= 503
K mk nhé , mà con cuối cùng kết quả là - 21 (âm 21) cơ chứ nếu thật thì ko trừ được đâu .( * . * )
(x + 129) : 4 = 844 (x - 452) x 5 = 255; (320 + x) - 102 = 197
x + 129 = 844 .4 x - 452 = 255 : 5 320 + x = 197 + 102
x + 129 = 3376 x - 452 = 51 320 + x = 299
x = 3376 - 129 x = 51 + 452 x = 320 - 299
x = 3247 x = 503 x = 21
(x+129):4= 844 (x-452) x 5 = 255 (320 + x) - 102 = 197
x+129 = 844.4 x-452 = 255:5 320 + x = 197 + 102
x+129 = 3376 x-452 = 51 320 + x = 299
x = 3376-129 x = 51+452 x = 299 - 320
x = 3247 x = 503 x = -21
Tính \(\sqrt{\left(2-3\sqrt{5}\right)^2}-\dfrac{4}{\sqrt{5}-3}-\sqrt{129+7\sqrt{320}}\)
320-20[(3^3+20^0):7-1]=
\(320-20\left[\left(3^3+20^0\right):7-1\right]\\ =320-20\left[\left(27+1\right):7-1\right]\\ =320-20\left[28:7-1\right]\\ =320-20\left[4-1\right]\\ =320-20.3\\ =320-60=260\)
\(320-20.\left[\left(3^3+20^0\right):7-1\right]\)
\(=320-20.\left[\left(27+1\right):7-1\right]\)
\(=320-20.\left(28:7-1\right)\)
\(=320-20.\left(4-1\right)\)
\(=320-20.3\)
\(=320-60\)
\(=260\)
20 + 20+20+20+20+20+20+20+320+2+2651=???
ai k mk thi mk k lai
20+20+20+20+20+20+20+20+320+2+2651=3133
= 20 x 8 + 320 + 2 + 2651
= 160 + 320 + 2 + 2651
= 480 + 2 + 2651
= 482 + 2651
= 3133
mk nhanh nhất
126 + (-20) + |124| - (-320) - |-150|
\(126+(-20)+|124|-(-320)-|-150|\\=126-20+124+320+125\\=(320-20)+124+125+126\\=300+375\\=675\)
12 +x = 96
96 - x = 12
78 + x = 98
x + 27 = 69
x + 20 = 85
x + 85 = 129
x + 129 = 201
x - 129 = 98
\(x=96-12=84.\)
\(x=96-12=84\)
\(x=98-78=20\)
\(x=69-27=42\)
\(x=85-20=65\)
\(x=129-85=44\)
\(x=201-129=72\)
\(x=98+129=227\)
96 - x = 12
x = 96 - 12
x = 84
78 + x = 98
x = 98 - 78
x = 20
x + 27 = 69
x = 69 - 27
x = 42
x + 20 = 85
x = 85 - 20
x = 65
x + 85 = 129
x = 129 - 85
x = 44
x + 129 = 201
x = 201 - 129
x = 72
x - 129 = 98
x = 129 - 98
x = 31
k mình nha , Thank you !
12+x=96
x=96-12
x=84
ket qua bai tiep cung la 84
78+x=98
x=98-78
x=20
x+27=69
x=69-27
x=42
x+20=85
x=85-20
x=65
x+85=129
x=129-85
x=44
x+129=201
x=201-129
x=72
x-129=98
x=98+129
x=227
126+(-20)+|124|-(-320)-|-150|
ko vt lại đề
mà cái này bấm máy tính là ra.........
\(126+\left(-20\right)+|124|-\left(-320\right)-|-150|\)
\(=126-20+124+320-150\)
\(=400\)
126 + ( - 20 ) + | 124 | - ( - 320 ) - | - 150 |
= 126 + ( - 20 ) + 124 - ( - 320 ) - 150
= ( 126 + ( - 20 ) ) + 124 - ( - 320 ) - 150
= 106 + 124 - ( - 320 ) - 150
=( 106 + 124 ) - ( - 320 ) -150
= 230 - ( - 320 ) - 150
= ( 230 - ( - 320 ) ) -150
= 550 - 150
= 400
\(=100+124+320-150\)
\(=224+320-150\)
\(=544-150\)
\(=394\)
20 . (10 + 10 ) + 320 .10 . 100 . 20
ai nhanh mik tích cho
20 . (10 + 10) + 320 . 10 . 20
= 20 . 20 + 64000
= 64400