imathneed1 imathneed1
  • 13-10-2019
  • Mathematics
contestada

17 x (5+a) = 17 x b + 17 x 13

A = ?
B = ?

Respuesta :

Taekie
Taekie Taekie
  • 13-10-2019

Answer:

a=-85/4

b=53/4

Step-by-step explanation:

17x(5+a)=17xb+221. (1)

85+17xa=17xb+221

85+(17xa)-(17xb)-221=0

17xa-17xb=-136

17x(a-b)=-136

a-b=-8

a=-8+b. (2)

Replace a=-8+b to (1):

17x5x(-8+b)=17xb+221

85x(-8+b)=17xb+221

-680+85xb=17xb+221

-680+85xb-17xb-221=0

-68xb-901=0

-68xb=901

b=-53/4

Replace b=-53/4 to (2):

a= -8+(-53/4)= -85/4

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