Ответы на вопрос:
( х + 10) / 4 + ( y - 2) / 3 = 1 3*( x + 10) + 4 *( y - 2) = 12 3x + 30 + 4y - 8 = 12 3x + 4y = - 10 =============== 3x - y = 25 y = 3x - 25 ============ 3x + 4*( 3x - 25) = - 10 3x + 12x - 100 = - 10 15x = 90 x = 6 ============ y = 18 - 25 = ( - 7 )
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