Question

решите уравнение пожалуйста ​

Answer 1

$1. \ 8x + 10 = 3x - 10 \ 8x - 3x = - 10 - 10 \ 5x = - 20 : : : | div 5 \ x = - 4 \ 2. \ 10( y - 2) - 12 = 14(y - 2) \ 10y - 20 - 12 - 14y = - 28 \ - 4y = 32 - 28 \ - 4y = 4 : : : | div ( - 4) \ y = - 1$

$3. \ - 25( - 8x + 6) = - 750 \ 200x - 150 = - 750 \ 200x = - 600 : : : | div 200 \ x = - 3 \ 4. \ - 10( - 4y + 10) = - 300 \ 40y - 100 = - 300 \ 40y = - 200 : : : | div 40 \ y = - 5$

$5. \ - 10x + 128 = - 74x \ - 10x + 74x = - 128 \ 64x = - 128 : : : | div 64 \ x = - 2 \ 6. \ 3(5y - 6) = 16y - 8 \ 15y - 16y = - 8 + 18 \ - y = 10 \ y = - 10$

$7. \ - 5(3x + 1) - 11 = - 1 \ - 15x - 5 = 11 - 1 \ - 15x = 5 + 10 \ - 15x = 15 : : : | div ( - 15) \ x = - 1$

$8. \ - 8y + 4 = - 2(5y + 6) \ - 8y + 10y = - 12 - 4 \ 2y = - 16 : : : | div 2 \ y = - 8$

$9. \ 20 + 30x = 20 + x \ 30x - x = 20 - 20 \ 29x = 0 \ x = 0 \ 10. \ 26 - 5y = 2 - 9y \ - 5y + 9y = 2 - 26 \ 4y = - 24 : : : | div 4 \ y = - 6$