Question

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Answer 1

( 7/12 )⁻⁴ × ( 7/12 )³ˣ = ( 7/12 )⁵

If bases are same and in multiplication, power gets added

( 7/12 )⁻⁴ ⁺ ³ˣ = ( 7/12 )⁵

comparing powers

-4 + 3x = 5

3x = 5 + 4

3x = 9

x = 9/3

x = 3