Question

0,13(9,8×+5,4)+1,2(4,5×+1)=15
плиз
плиз ​

Answer 1

Ответ:

$\pmb {x =1 \dfrac{3212}{3337} }$

Пошаговое объяснение:

$\sf 0,13 \cdot (9,8 x + 5,4) + 1,2 (4,5 x + 1 ) = 15 \\\\ 1,274 x+0,702 + 5,4x + 1,2 = 15 \\\\ 6, 674x + 1,902 = 15 \\\\\ 6,674 x = 15 - 1,902 \\\\ 6,674 x = 13,098 \\\\x = \cfrac{13,098}{6,674 } = \cfrac{13098}{6674} = \cfrac{2 \cdot 6549}{2\cdot 3337} = \cfrac{6549}{3337} = 1\cfrac{3212}{3337}$