Question

a - 2b = 1 ; 2a - 4b = 12

Answer 1

Answer:

answer is 0

Step-by-step explanation:

a-2b=1. ......eq1st

2a-4b=12.......eq2nd

now multiply first eq by 2

2a-4b=2

2a-4b=12

-. +. -

0-0=-10

Answer 2

Given: a - 2b = 1 ; 2a - 4b = 12

To find: the values of a and b

Solution:

$a-2b=1\\a=1+2b$

we will put it in the second equation

$2(1+2b)-4b=12\\2+4b-4b=12\\2=12$

$\mathrm{\:is\:false,\:therefore\:the\:system\:of\:equations\:has\:no\:solution}$

Final answer:

Hence the given equations has no solution.