Các câu hỏi tương tự
7x-x=5^21:5^19+3.2^2-7^0
\(7x-x=5^{21}:5^{19}+3\times2^2-7^0 \)
Tìm x
7x= 521: 519 + 3 x 22 -70 + x
7x - x = 521 : 519 + 3 .22 - 70
tìm x
a) 6x + x = 511 : 519 + 31
b) 7x - x = 521 : 519 + 3 . 22 - 70
7x-x=521:519+3.22-70
Bài 1:Tìm x
a) 5x+x=39-3^11:3^9
b) 7x-x=5^21:5^19+3.2^2-7^0
c) 7x-2x =6^17:6^15+44:11
l) 7x+x=521:519+3.22-70
7x-x= 521:519+3.22.70