Question

6. C-13) + (12 X 13 = -13 how it came a answer​

Answer 1

find the value of a,b,c, and d from the equation

[ a - b 2a +c ]

[2a - b 3 a + d ] = [ -1 5]

0 13

since matrices are equal

their corresponding elements are equal

a-b = -1

2a - b = 0.

2a + c = 5.

3c + d = 13

solve these equations

from ( 2 )

2a - b = 0

2a = b

b = 2a

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