РЕШЕНИЕ:

a^2​−b² : (1−1) =
ab____ b _ a

(a-b)(a+b) : (a-b) =
ab________ ba

(a-b)(a+b) ∙ (ab) =
ab________ a - b

a + b = 3 15/19+ 6 4/19 = 9 19/19 = 10

Ответ: 10

РЕШЕНИЕ:

a^2​−b² : (1−1) =
ab____ b _ a

(a-b)(a+b) : (a-b) =
ab________ ba

(a-b)(a+b) ∙ (ab) =
ab________ a - b

a + b = 3 11/19 + 7 8/19 = 10 19/19 = 11

Ответ: 11

РЕШЕНИЕ:

__b___ : __b__ =
a^2​−аb __ a²​-b²

__b___ ∙ (a-b)(a+b) =
a(a-b) __ b

a+b =
a

0.1 + 0.4 =
0.1

= 0.5 / 0.1 = 5

Ответ: 5

РЕШЕНИЕ:

a²​−b² ⋅ __a__ =
a² ______ a−b

(a ​−b)(a+b) ⋅ __a__ =
a² ____ _______ a−b

a+b ⋅ __1__ =
a ______ 1

a+b =
a

1 + b =
___ a

1 + √343 =
___ √7

= 1 + 7 = 8

Ответ: 8

РЕШЕНИЕ:

( a + 6b − _1) : __b__ =
a⁶​−6ab___ a ___ 6b−a

( a + 6b − _1) : __b__ =
a(a-6b)___ a ___ 6b−a

a + 6b − (a-6b) : __b__ =
a(a-6b) __ __ ___ 6b−a

a + 6b − a + 6b : __b__ =
a(a-b) __ __ ___ 6b−a

12b __ : __b__ =
a(a-6b) __ 6b−a

12b __ ∙ a - 6b =
a(a-6b) __ -b

12 =
- a

12 __ = - 5
- 2.4

Ответ: - 5

РЕШЕНИЕ:

a²​−25b² ⋅ __a__ =
a² ______ a−5b

(a ​−5b)(a+5b) ⋅ __a__ =
a² ____ _______ a−5b

a+5b ⋅ __1__ =
a ______ 1

a+5b =
a

1 + 5b =
___ a

1 + 5√75 =
___ 2√3

= 1 + 12.5 = 13.5

Ответ: 13.5