Question

va rog nu le știu face !!​

Answer 1

Răspuns:

1)15-14:0,7=15-20= -5

2)16+32÷4=16+8=24

3)(-56)÷(-8)-8=7-8=-1

3)[-2+3(-6)]÷4=( -2-18)÷4=-20÷4= -5

5)-1-2+3-4-5+6-7-8+9-10=-19

6)[(-13+7)(-5)+(-36)]:(-2)=(-6(-5)-36)÷(-2)=(30-36)÷(-2)=-6÷(-2)=3

7)2⁶:2²-2³=2³-2³=0

8)

$\frac{1}{2} + \frac{3}{4} = aducem \: la \: acelasi \: numitor \\ \frac{2}{4} + \frac{3}{4 } = \frac{5}{4}$

9)

$\frac{4}{5} - \frac{2}{3} = \frac{12}{15} - \frac{10}{15} = \frac{2}{15}$

10)

$\sqrt{27} + \sqrt{12} - \sqrt{75} =3 \sqrt{3} + 2\sqrt{3} - 5 \sqrt{3} = 5 \sqrt{3} - 5 \sqrt{3} = 0$

11)