5x+5x+1+5x+2+5x+3=1+2+3+...+87+88-42
5x+5x+1+5x+2+5x+3=1+2+3+...+87+88-42
giúp mình với
5x+5x+1+5x+2=31tìm x
1, Tìm x
a, 42x-6=1
b, 5x+ 5x+1+5x+2=775
5x+1-5x=2.2x+8.2x
2^5x+1-2^5x=32
Bài 1: Tìm x, biết: 5x+1 - 5x = 2 . 28 + 8
(giúp mình vs ~~)
3x2(5x+1)+6x3(5x+2)=9x3(5x+3)
5xx+1+5x=150