1) 4 х+5 (3-2 х) = 5-11 х

2) 8 х+3 (7-2 х) = 4 х+3

3) 23-4 (3 х+8) = 1-17 х

Question

Математика

Марьяша

30 сентября, 08:09

1) 4 х+5 (3-2 х) = 5-11 х

2) 8 х+3 (7-2 х) = 4 х+3

3) 23-4 (3 х+8) = 1-17 х

+3

Ответы (1)

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Любомира · Answer 1

1) 4 х+5 (3-2 х) = 5-11 х

4x+15-10x=5-11x

11x+4x-10x=-15+5

5x=-10

x=-10:5

x=-2

2) 8 х+3 (7-2 х) = 4 х+3

8x+21-6x=4x+3

8x-6x-4x=-21+3

-2x=-18

x = (-18) : (-2)

x=9

3) 23-4 (3 х+8) = 1-17 х

23-12x-32=1-17x

17x-12x=32-23+1

5x=10

x=10:5

x=2

1) 4 х+5 (3-2 х) = 5-11 х2) 8 х+3 (7-2 х) = 4 х+33) 23-4 (3 х+8) = 1-17 х

1) 4 х+5 (3-2 х) = 5-11 х

2) 8 х+3 (7-2 х) = 4 х+3

3) 23-4 (3 х+8) = 1-17 х