Question

7(x+3)=4(x-5)=(B-3)×3=(2+y)×9=​

Answer 1

Ответ:

7(х+3)

7х +21

ответ: 7х +21

4(х-5)

4х - 20

ответ: 4х - 20

(В-3)×3

3В -9

ответ: 3В -9

(2+y)×9

18 + 9y

ответ: 18 +9у

Answer 2

Ответ:

7(x+3)= 7x+7×3=7x+21

4(x-5)= 4x-4×5=4x-20

(B-3)×3= 3B-3×3=3B-9

(2+y)×9=2×9+9y=18+9y

Answer 3

It seems like you have a system of equations with multiple expressions. Let's solve them step by step:

1. $7(x+3) = 4(x-5)$: Expand both sides of the equations: $7x + 21 = 4x - 20$

Subtract $4x$ from both sides: $3x + 21 = -20$

Subtract $21$ from both sides: $3x = -41$

Divide both sides by $3$: $x = -\frac{41}{3}$

2. $4(x-5) = (B-3) \times 3$: Expand the left side: $4x - 20 = 3B - 9$

Add $20$ to both sides: $4x = 3B + 11$

Divide both sides by $4$: $x = \frac{3B + 11}{4}$

3. $(B-3) \times 3 = (2+y) \times 9$: Expand both sides: $3B - 9 = 18 + 9y$

Add $9$ to both sides: $3B = 18 + 9y$

Divide both sides by $3$: $B = 6 + 3y$

4. $(2+y) \times 9 = ...$ - The fourth equation doesn't seem to be complete. Could you provide the complete equation for me to proceed?

Please verify the information and equations provided, as there might be a mistake or missing information in the equations. If you have the complete fourth equation, feel free to provide it, and I can help you solve it as well.