Question

10(11-x)+x=x×10+11-x+9​

Answer 1

Answer:

-5

Step-by-step explanation:

10(11-x)+x ＝ (x*10)+11-x+9

110-10x+x ＝10x+11-x+9

110-9x ＝9x+20

110-9x-9x-20＝0

-18x+90＝0

18x ＝-90

x＝ -90/18

＝ -5