\(23,56-2x=4,56\)
\(2x=23,56-4,56\)
\(2x=19\)
\(x=19:2\)
\(x=9,5\)
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\(23,56-2x=4,56\)
\(2x=23,56-4,56\)
\(2x=19\)
\(x=19:2\)
\(x=9,5\)
1,23 - (4,56 + 7,89) - 6,6 . 7,7 = ?
tính nhanh :
a, 23,56 + 56,77
b, 32,19 + 32
c, 35,34 + 35,86 + 65,75 + 65,45
d, 43,17 + 29,57 + 13,43 + 57
e, 3.25.8 + 4.37.6 + 2.38.12
f, 64,16 + 81,84 + 17,16
Tính nhanh: 123,45 + 23,56 + 76,44 + 54,55
2x+2x+1+2x+2+...+2x+2020=2x+2024-8
2x+2x+1+2x+2+2x+3+...+2x+2021=22025-8
2x + 2x + 1 + 2x + 2=960 - 2x + 3
2x + 2x+1 + 2x+2 +......+2x+2021 =22026 -16
2x + 2x+1 + 2x+2 +......+2x+2021 =22026 -16
2x+2x+1+2x+2+...+2x+2015=22019- 8
2x + 2x+1+ 2x+2 + .... + 2x+2021 = 22026 - 16