Question

решите уравнение:

а) 10х + 3(7 - 2х) = 13 + 2х

б) (18х - 19) - (4 - 7х) = - 73

поомоогиитее!!!

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Answer 1

$10x + 3(7 - 2x) = 13 + 2x \\ 10x + 21 - 6x = 13 + 2x \\ 2x = - 8 \\ x = -4$

$(18x - 19) - (4 - 7x) = - 73 \\ 18x - 19 - 4 + 7x = - 73 \\ 25x = - 50 \\ x = - 2$