Пошаговое объяснение:
1) 3(x - 7) + 5x = 3x - 21 + 5x = 8x - 21
2) 5(4 - 3x) + 8x = 20 - 15x + 8x = 20 - 7x
3) (y - 4) * 2 + 10y = 2y - 8 + 10y = 12y - 8
4) (2y + 5) * 4 - 11y = 8y + 20 - 11y = -3y + 20
5) 4x + 2(0,5x + 3)= 4x + x + 6 = 5x + 6
6) 6x - 3(x - 7)= 6x - 3x + 21 = 3x + 21
2)5(4-3x)+8x=20-15x+8x=20-7x;
3)(y-4)×2+10y=2y--8+10y=12y-8;
4)(2y+5)×4-11y=8y+20-11y=20-3y;
5)4x+2(0,5x+3)=4x+x+6=5x+6;
6)6x-3 (x-7)=6x-3x+21=3x+21.
Пошаговое объяснение:
1) 3(x - 7) + 5x = 3x - 21 + 5x = 8x - 21
2) 5(4 - 3x) + 8x = 20 - 15x + 8x = 20 - 7x
3) (y - 4) * 2 + 10y = 2y - 8 + 10y = 12y - 8
4) (2y + 5) * 4 - 11y = 8y + 20 - 11y = -3y + 20
5) 4x + 2(0,5x + 3)= 4x + x + 6 = 5x + 6
6) 6x - 3(x - 7)= 6x - 3x + 21 = 3x + 21