Question

va rog rapid dau coroana si ma abonez
ex 3​

Answer 1

Explicație pas cu pas:

a)

28:7+5×[28+6×(56:8-36:9)-39]+19=

28:7+5×[28+6×(7-4)-39]+19=

28:7+5×(28+6×3-39)+19=

28:7+5×(28+18-39)+19=

28:7+5×(46-39)+19=

28:7+5×7+19=

4+35+19=

39+19=

58

b)

{25×[(6×6+300:100):13]}×4-300=

{25×[(36+3):13]}×4-300=

[25×(39:13)]x4-300=

(25×3)×4-300=

75×4-300=

300-300=

0

Answer 2

Salutare!

a)

$\bf 28:7+5\cdot[28+6\cdot(56:8-36:9)-39]+19=$

$\bf 28:7+5\cdot[28+6\cdot(7-4)-39]+19=$

$\bf 4+5\cdot(28+6\cdot 3-39)+19=$

$\bf 4+5\cdot(28+18-39)+19=$

$\bf 4+5\cdot 7+19=$

$\bf 4+35+19=$

$\boxed{\bf 58}$

b)

$\bf [25\cdot[(6\cdot 6+300:100):13]]\cdot4-300=$

$\bf [25\cdot[(36+3):13]]\cdot4-300=$

$\bf [25\cdot(39:13)]\cdot4-300=$

$\bf (25\cdot3)\cdot4-300=$

$\bf 75\cdot4-300=$

$\bf 300-300=$

$\boxed{\bf 0}$

==pav38==