Question

18−(−2x−11)=5−(−6x+17)

Answer 1

$18-(-2x-11)=5-(-6x+17)\\18+2x+11=5+6x-17\\29+2x=-12+6x\\2x-6x=-12-29\\-4x=-41\;\;\;|:-4\\x=\frac{41}{4}-->x=10.25$

Answer 2

$\displaystyle \sf 18-(-2x-11)=5-(-6x+17)\\\displaystyle \sf 18+2x+11=5+6x-17\\\displaystyle \sf 2x+11+18=6x-17+5\\\displaystyle \sf 2x+29=6x-12\\\displaystyle \sf 2x-6x=-12-29\\\displaystyle \sf -4x=-41\\\displaystyle \sf x=-41\div(-4)\\\displaystyle \sf \underline{x=10,25}$

Ответ: 10,25