Question

Answer 1

c: =>-2x=42

hay x=-21

Answer 2

\(a,\Rightarrow41-2x+5=720:20=36\\ \Rightarrow2x=10\Rightarrow x=5\\ b,\Rightarrow119-x+6=2448:24=102\\ \Rightarrow x=23\\ c,\Rightarrow-3x-15+x=17\\ \Rightarrow-2x=32\Rightarrow x=-16\\ d,\Rightarrow-3x-1+8-x=-9\\ \Rightarrow-4x=-16\Rightarrow x=4\)