\(5\left(x+35\right)=519\)
\(x+35=519\div5\)
\(x+35=108,8\)
\(x=108,8-35\)
\(x=68,8\)
\(5\left(x+35\right)=519\)
\(x+35=519\div5\)
\(x+35=108,8\)
\(x=108,8-35\)
\(x=68,8\)
Thực hiện phép tính :
a) 31 . { 330 : [178 – 4 . ( 35 – 21 : 3 )]}
b) ( 5 19 . 5 14 ): 5 32
7x - x = 521: 519 + 3.22 - 7
7x - x = 521 : 519 + 3.22 - 7 0
[83+519]x=66*100+22
Tìm x ∈ Z, biết:
a) - 5 19 + 3 19 < x 19 ≤ 13 19 + - 11 19
Chứng tỏ: C = 5 +52+53+...+519+520 chia hết cho 13
Bài 2: (1.5 điểm) Tìm x, biết: (83 + 519).x = 66.100 + 22. Kết quả:
Tìm x ∈ Z, biết:
a ) - 5 19 + 3 19 < x 19 ≤ 13 19 + - 11 19 b ) - 7 8 + 5 6 < x 24 ≤ 5 8 + - 5 12
a) 5x + 3x = 36 : 33.4 + 12
4x + 2x = 68 – 219 : 216
a) 5x + x = 39 – 311:39
b) 7x – x = 521 : 519 + 3.22 - 70
c) 7x – 2x = 617: 615 + 44 : 11
a) 5x + 3x = 36 : 33.4 + 12
4x + 2x = 68 – 219 : 216
a) 5x + x = 39 – 311:39
b) 7x – x = 521 : 519 + 3.22 - 70
c) 7x – 2x = 617: 615 + 44 : 11