РЕШЕНИЕ:

( a + 3b − _1) : __b__ =
a³​−3ab___ a ___ 3b−a

( a + 3b − _1) : __b__ =
a(a-3b)___ a ___ 3b−a

a + 3b − (a-3b) : __b__ =
a(a-3b) __ __ ___ 3b−a

a + 3b − a + 3b : __b__ =
a(a-b) __ __ ___ 3b−a

6b __ : __b__ =
a(a-3b) __ 3b−a

6b __ ∙ a - 3b =
a(a-3b) __ -b

6 =
- a

6 __ = - 30
- 0.2

Ответ: - 30

РЕШЕНИЕ:

a²​−64b² : ab+8b² =
____a² ___ a

(a-8b)(a+8b) ∙ a_____ =
____a² _____ b (a+8b)

a-8b =
ab

12-8 ∙ 60 =
12 ∙ 60


-468 = - 0.65
720

Ответ: - 0.65

РЕШЕНИЕ:

( b− a)⋅__1___ =
a_ b__ b+ a

( b² − a²)⋅__1___ =
a b______ b+ a

( b- a)( b+ a)⋅__1___ =
a b_________ b+ a

b- a =
a b

1 - 1 =
a __b

1 _ - 1 =
1 __ 1/3

= 1 - 3 = - 2

Ответ: - 2

РЕШЕНИЕ:

a²​−49b² ⋅ __a__ =
4a² ____ 4a​− 28b

(a ​−7b)(a+7b) ⋅ __a__ =
4a² ____ ____ 4(a−7b)

a+7b ⋅ __1__ =
4a ______ 4

a+7b =
16a

1 _+ 7b =
16_ 16a

1 _ + 7√175 =
16 _ 16√175

= 8/16 = 0.5

Ответ: 0.5

РЕШЕНИЕ:

( b−7a)⋅__1___ =
7a_ b__ b+7a

( b² − 49a²)⋅__1___ =
7 a b__ ____ b+7a

( b-7a)( b+7a)⋅__1___ =
7 a b_________ b+7a

b-7a =
7 a b

1 - 1 =
7a_ b

1 __ - 1∙ 6 =
7∙1/7 _ 1

= 1 - 6 = - 5

Ответ: - 5

РЕШЕНИЕ:

(2b−5a)⋅__1___ =
5a_ 2b__2b+5a

(4b² − 25a²)⋅__1___ =
10 a b______2b+5a

(2b-5a)(2b+5a)⋅__1___ =
10 a b_________2b+5a

2b-5a =
10 a b

1 - 1 =
5a _2b

1 __ - 1 __ =
5∙1/8 _ 2∙1

= 8/5 - 1/2 = 1.6 - 0.5 = 1.1

Ответ: 1.1