Question

-8(-10/7)=4(-10/7+5)+2(-10/7)
help pls
just like show solution

Answer 1

Explanation:

`\displaystyle\\-8(-(10)/(7))= 4(-(10)/(7) +5)+2(-(10)/(7) )\\`

`\displaystyle\\Let \ -(10)/(7) =t\\Hence,\\(-8)(t)=(4)(t+5)+(2)(t)\\-8t=(4)(t)+(4)(5)+2t\\-8t=4t+20+2t\\-8t=6t+20\\-8t+8t=6t+20+8t\\0=14t+20\\0-20=14t+20-20\\-20=14t\\-20=(14)(-(10)/(7) )\\-20=-((14)(10))/(7) \\\\-20=-((7)(2)(10))/(7) \\-20=-(2)(10)\\-20\equiv-20`