Question

Решите уравнение: а) 4•(8-5y)+2y=-94 б) 12x+8=8x-4 в) -0,4n+1,6=2,5-0,3n

Answer 1

Ответ:

Пошаговое объяснение: удачи!!!

а) 4•(8-5y)+2y=-94

32-20у+2у=-94

32-18у=-94

18у=-94-32

18у=-126

у=-7

б) 12x+8=8x-4

12х-8х=-4-8

4х=-12

х=-3

в) -0,4n+1,6=2,5-0,3n

-0,4n+0.3n=2.5-1.6

-0.1n=0.9

n=-9

Answer 2

а) 4*(8-5y)+2y=-94

32-20у+2у=-94

-18у=-94-32

-18у=-126

у=7

б) 12x+8=8x-4

12х-8х=-4-8

4х=-12

х=-3

в) -0,4n+1,6=2,5-0,3n

-0,4n+0,3n=2,5-1,6

-0,1n=0,9

n=-9

Answer 3

I can help you solve equations. Here are the detailed solutions for each equation:

а) $$4 \cdot (8 - 5y) + 2y = -94$$ To solve this equation, we need to simplify both sides and isolate y. We can do this by following these steps:

- Distribute 4 to the terms inside the parentheses: $$4 \cdot 8 - 4 \cdot 5y + 2y = -94$$ - Simplify the left side by combining like terms: $$32 - 18y = -94$$ - Subtract 32 from both sides: $$-18y = -126$$ - Divide both sides by -18: $$y = 7$$

The solution is $$y = 7$$.

б) $$12x + 8 = 8x - 4$$ To solve this equation, we need to move all the x terms to one side and all the constant terms to the other side. We can do this by following these steps:

- Subtract 8x from both sides: $$4x + 8 = -4$$ - Subtract 8 from both sides: $$4x = -12$$ - Divide both sides by 4: $$x = -3$$

The solution is $$x = -3$$.

в) $$-0.4n + 1.6 = 2.5 - 0.3n$$ To solve this equation, we need to move all the n terms to one side and all the constant terms to the other side. We can do this by following these steps:

- Add 0.4n to both sides: $$1.6 = 2.5 + 0.1n$$ - Subtract 2.5 from both sides: $$-0.9 = 0.1n$$ - Divide both sides by 0.1: $$n = -9$$

The solution is $$n = -9$$.