Question

If 343power x +1
=49 power x+ 21
Find the value of x​

Answer 1

Answer:

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Answer 2

Answer:

X = 39

Step-by-step explanation:

${343}^{(x + 1)} = {49}^{(x + 21)} \\ {7}^{3(x + 1)} = {7}^{2(x + 21)}$

since base is same, So

$3(x + 1) = 2(x + 21) \\ 3x + 3 = 2x + 42 \\ 3x - 2x = 42 - 3 \\ x = 39$

Hope it helps u