Question

-5(7-х)-4(х-8)=3, 2(х-4)-5(х-6)=1​

Answer 1

Ответ:

1.  х = 6      2. х = 7

Пошаговое объяснение:

1. -5(7-х)-4(х-8) = 3

-35 + 5х - 4х + 32 = 3

х = 3 + 3     х = 6

2. 2(х-4)-5(х-6) = 1​

2х - 8 - 5х + 30 = 1

-3х = 1 - 22    -3х = -21    х = -21/(-3)      х = 7

Answer 2

Ответ:

-5(7-х)-4(х-8)=3

-35+5х-4х+32=3

5х-4х=3+35-32

х=6

Ответ: х= 6

ПРОВЕРКА

-5*(7-6)-4*(6-8)=3

3=3

_________

2(х-4)-5(х-6)=1​

2х-8-5х+30=1

2х-5х=1-30+8

-3х= -21 | : (-3)

х=7

Ответ: х=7

ПРОВЕРКА

2*(7-4)-5*(7-6)=1

1=1

Answer 3

Let's solve these two equations step by step:

1. -5(7 - x) - 4(x - 8) = 3

First, distribute the -5 and -4 on the left side:

-5 * 7 + 5x - 4x + 32 = 3

Now, combine like terms:

-35 + x + 32 = 3

Combine constants:

x - 3 = 3

Now, isolate x by adding 3 to both sides:

x = 3 + 3

x = 6

So, the solution to the first equation is x = 6.

2. 2(x - 4) - 5(x - 6) = 1

First, distribute the 2 and -5 on the left side:

2x - 8 - 5x + 30 = 1

Now, combine like terms:

(2x - 5x) + (-8 + 30) = 1

-3x + 22 = 1

Subtract 22 from both sides to isolate -3x:

-3x = 1 - 22

-3x = -21

Now, divide both sides by -3 to find x:

x = (-21) / (-3)

x = 7

So, the solution to the second equation is x = 7.

Therefore, the solutions to the given system of equations are:

x = 6 (from the first equation) x = 7 (from the second equation)