Question

3x-15=12. 2y=108+5y. 12,6-b = -5b
4x+8=24. 0,5k=-81-2,5k. 15,3z-3=-3
5x=12+2x. -13=-7x+5. 5k+10,6=5k


Помогите пожалуйста

Answer 1

$3x - 15 = 12 \ 3x = 27 \ x = 9$
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$2y = 108 + 5y \ - 3y = 108 \ y = - 36$
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$12.6 - b = - 5b \ 4b = - 12.6 \ b = - 3.15$
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$4x + 8 = 24 \ 4x = 16 \ x = 4$
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$0.5k = - 81 - 2.5k \ 3k = - 81 \ k = - 27 :$
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$15.3z - 3 = - 3 \ 15.3z = 0 \ z = 0$
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$5x = 12 + 2x \ 3x = 12 \ x = 4$
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$- 13 = - 7x + 5 \ - 18 = - 7x \ x = frac{18}{7} \ \ x = 2 frac{4}{7}$
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$5k + 10.6 = 5k \ 0 = 10.6 \ k = 0$
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