Question

13х+4х=408 7в+6в=403 47х-15х=2144

Answer 1

13х+4х=408
17х=408
х=408:17
х=24

7в+6в=403
13в=403
в=403:13
в=31

47х-15х=2144
32х=2144
х=2144:32
х=67

Answer 2

X=9 x =4    b=9 b=6  x=3 x=2

Answer 3

To solve the given equations, let's go through them one by one.

1. 13x + 4x = 408

Combining the like terms on the left side, we have: 17x = 408

To isolate x, divide both sides of the equation by 17: x = 408 / 17 x ≈ 24

So the solution for the first equation is x ≈ 24.

2. 7v + 6v = 403

Combining the like terms on the left side, we have: 13v = 403

To isolate v, divide both sides of the equation by 13: v = 403 / 13 v ≈ 31

So the solution for the second equation is v ≈ 31.

3. 47x - 15x = 2144

Combining the like terms on the left side, we have: 32x = 2144

To isolate x, divide both sides of the equation by 32: x = 2144 / 32 x ≈ 67

So the solution for the third equation is x ≈ 67.

In summary, the solutions for the given equations are: x ≈ 24, v ≈ 31, and x ≈ 67.