Question

(a - 15) x 2 - [9x 2 - 24: 4 + (100 - 9 x 5) x 0] = 12





a x 10 - 10 x [362 + 10 x (24 + 18:3)] = 10 x 10
ca rog dau coroana si va rog sa va grabiti!!!!!!

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Answer 1

Am notat a cu x pentru a rezolva mai usor

Prima

$(x - 15) \times 2 - (18 - 12 + (100 - 45) \times 0) = 12$

$(x - 15) \times 2 - 6 = 12$

$(x - 15) \times 2 = 18$

$x - 15 = 9$

$x = 24$

A doua

$10x - 10 \times (362 + 10(24 + 6)) = 100$

$10x - 10(362 + 10 \times 30)) = 100$

$10x - 10 \times 662 = 100$

$10x = 7620$

$x = 762$

Answer 2

Explicație pas cu pas:

(a - 15) x 2 - [9x 2 - 24: 4 + (100 - 9 x 5) x 0] = 12

2a - 30 - ( 18 - 6 + 0)=12

2a - 30 - ( 18 - 6)= 12

2a - 30 - 12= 12

2a - 42= 12

2a= 12 + 42

2a= 54

a= 54 : 2

a= 27

a x 10 - 10 x [362 + 10 x (24 + 18:3)] = 10 x 10

10a - 10 × [362 + 10 × (24 + 6)]= 100

10a - 10 × (362 + 10 × 30)= 100

10a - 10 × (362 + 300)= 100

10a- 10 × 662= 100

10a - 6620= 100

10a= 100+ 6620

10a= 6720

a= 6720 : 10

a= 672