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SvetSun20
@SvetSun20
July 2022
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решите уравнение 2*( 1/ 7)^ (3x+7)-7 *(1 /7)^ (3x+8)= 49
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гюйс
Verified answer
2*(1/7)^(3x+7) - 7 *(1/7)^(3x+8)=49
(1/7)^(3x+7) *(2 - 7*1/7)=7²
(1/7)^(3x+7) * 1=(1/7)^-2
3x+7= -2
3x= -9
x= -3
8 votes
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Verified answer
2*(1/7)^(3x+7) - 7 *(1/7)^(3x+8)=49(1/7)^(3x+7) *(2 - 7*1/7)=7²
(1/7)^(3x+7) * 1=(1/7)^-2
3x+7= -2
3x= -9
x= -3