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MateSuperman
a fost răspuns

3 la puterea x totul la puterea a 5a impartit la 9 la puterea x = 3 la puterea 30 si
2.(5.x+7)+3.(2.x-4)=18 URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! VA ROGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! PLSSSSSSSSSSSSSS

Răspuns :

Didi12342
(3^x)^5 : 9^x = 3^30

3^5x : 3^2x = 3^30

3^5x-2x = 3^30

3^3x = 3^30

3x = 30

x = 30:3

x = 10



2×(5x+7) + 3×(2x - 4) = 18
10x + 14 + 6x - 12 = 18
16x = 18 - 2
16x = 16
x = 1

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