(x-15) : 2 = 1002
(x-15) = 1002 . 2
x-15 = 2004
x = 2004 + 15
x = 2019
3.x - 33 = 32020 : 32019
3.x - 33 = 32020-2019
3.x - 33 = 3
3x = 3 + 33
3.x = 36
x = 36 : 3
x = 12
tk cj nha
+)\(\left(x-15\right):2=1002\)
\(x-15=1002.2\)
\(x-15=2004\)
\(x=2004+15\)
\(x=2019\)
+)\(3x-33=3^{2020}:3^{2019}\)
\(3x-33=3\)
\(3x=33+3\)
\(3x=36\)
\(x=36:3\)
\(x=12\)
Chúc bạn học tốt!
đáp án câu đầu x= 2019.
TL:
(x-15):2=1002
(x-15)= 1002 * 2
x-15=2004
x=2004 + 15
x= 2019
3.x - 33= 32020 : 32019
3.x-33= 32020 - 2019
3.x -33=3
3x=3+33
3.x=36
x=36:3
x=12
-HT-