Раскрой скобки и 1) 3 (3x - 5) - 2 ( 1 + 6x) + 4 (2x + 3) = 2) 8 (3+ 2t) - 7 (3t - 4) + 5( 1 - 4t) = 3) 9 ( 3y - 2) - 6 (4 - y ) - 8 ( 3y + 5) =

Пошаговое объяснение:

1) 3 (3x - 5) - 2 ( 1 + 6x) + 4 (2x + 3) = 9x-15-2-12x+8x+12 = 5x-5

2) 8 (3+ 2t) - 7 (3t - 4) + 5( 1 - 4t) = 24+16t-21t+28+5-20t = -25t+57

3) 9 ( 3y - 2) - 6 (4 - y ) - 8 ( 3y + 5) = 27y-18-24+6y-24y-40 = 9y-82