Question

(ii) (-3)4m x-3)5 = (-3)7​

Answer 1

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$\mathbb{(-3)(4m×(-3))5=(-3)7}$

$\cancel{(-3)}\mathbb{(4m×(-3))5= {\cancel{(-3)}} 7}$

$\mathbb{20m×(-15)=7}$

$\mathbb{20m =7+15}$

$\mathbb {20m= 22}$

$m= \frac{20}{22}$

$m= \frac{10}{11}$

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Answer 2

Answer: m= 1/2

Step-by-step explanation:

-3^4m -3^5 = -3^7​

(-3)^(4m+5) = -3^7​

Comparing coefficients

4m+5= 7

4m = 7-5=2

m= 2/4= 1/2

m= 1/2