Question

【 100x+10(x-2)+(26-2x) 】-【 10x+x 】=【 100(26-2x)+10(x-2)+x 】

Answer 1

【 100x+10(x-2)+(26-2x) 】-【 10x+x 】=【 100(26-2x)+10(x-2)+x 】

【 100x+(26-2x) 】-【 10x+x 】=【 100(26-2x)+x 】

【 100x 】-【 10x+x 】=【 99(26-2x)+x 】

89x=99×26-198x+x

(89+198-1)x=99×26

286x=99×26

x=99×26÷186

x=9