1. If 4.75x = 12.35, what is the value of x? 2. What is 3x +2+ 4x - 1 after combining like terms?

1. x = 2.6

2. 7x + 1

Step-by-step explanation:

1.

Given:

4.75x = 12.35

Find x

4.75x = 12.35

Divide both sides by the coefficient of x, that is 4.75

4.75x / 4.75 = 12.35 / 4.75

x = 2.6

Check

4.75x = 12.35

4.75(2.6) = 12.35

12.35 = 12.35

2.

Given:

3x + 2 + 4x - 1

Combine like terms

3x + 4x + 2 - 1

7x + 1

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x