Решите пример и неравенство. (4/5с+5с/4+2)*4с/5с+4=-1 5x+8≥-3x

Question

Решите пример и неравенство.

(4/5с+5с/4+2)*4с/5с+4=-1

5x+8≥-3x

Answer 1

(-4/5 - 5/4 + 2) * (-4)/(4-5) = (-16/20 - 25/20 + 40/20)*4 = -1/20 * 4 = -4/20 = -1/5 = -0,2

1, 5x+8≥-3x 
2 5x+3x≥8 
3,8x≥8
4,x≥8/8
5,x≥1

Comments

все!

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