x/25=-3/15.7/6
15.7+25*3.8+18.15/3-2.07
(25/5^2.30)/15.7
12−{800: 537[ 537 −(25 +15.7)]}-12021.
12 –32.{800:[537 –(25+ 15.7)]}
Help me pls
\(=12-32\cdot\left\{800:407\right\}=12-32\cdot\dfrac{800}{407}=\dfrac{-20716}{407}\)
12−{800: 537[ 537 −(25 +15.7)]}-12021
MN giúp mình với !HuHu !
3.5 mũ 2 + 15.7 mũ 2-8 mũ 3 chia 2
toán lớp 6
3.5² + 15.7² - 8³ : 2
= 3.25 + 15.49 - 512 : 2
= 75 + 735 - 256
= 810 - 256
= 554
3.5² + 15.7² - 8³ : 2
= 3.25 + 15.49 - 512 : 2
= 75 + 735 - 256
= 810 - 256
= 554
2.32.{22.15.7:6+[150-(68.2-23.5)]}
2.32.{22.15.7:6+[ 150-(68.2-23.5)]}
= 2.32.{22.15.7:6+[150-(136-8.5)]}
=2.32.{22.15.7:6+[150-(136-40)]}
=2.32.{22.15.7:6+[150-96]}
=2.32.{22.15.7:6+54}
=2.32.{4.15.7:6+54}
=2.32.{60.7:6+54}
=2.32.{420:6+54}
=2.32.{70+54}
=2.32.124
=2.9.124
=18.124
=2232
K mk na <3
(15.7^5+6.7^5):7^6
Ta có:
[7^5. (15 + 6) : 7^6
=(7^5 . 21) : 7^6
=(7^5 . 7 . 3) : 7^6
=(7^6 . 3) : 7^6
=3
( 15 . 7 ^ 5 + 6 . 7 ^ 5 ) : 7 ^ 6
= ( 15 . 75 + 6 . 75 ) : 76
= ( 252105 + 100842 ) : 76
= 352947 : 76
= 3
Tìm x biết: x + 1 1.3 + x + 1 3.5 + x + 1 5.7 + ... + x + 1 97.99 = 50 x