2.5x - 3 + 2x = 1.75x - 1.25x + 13
4.5x - 3 = 0.50x + 13
4.0x = 16
x = 4
Answer: 4
2. We'll assume those xs are in the numerator
(3/7)x - 1/4 + (3/7)x = (9/7)x - (3/7)x + 3/4 - 1
(6/7)x - 1/4 = (6/7)x - 1/4
0 = 0
That's always true.
Answer: Any x is a solution.
This number would be 24. So 21 own football boots, 16 own a football and there are 24 children in the class. not good at math so yeah
Answer:
b= -164
Step-by-step explanation:
calculate the difference
7x(-75)-2b= -197
multiply the numbers
-525-2b= -197
move the constant to the right- hand side and change the sign
-2b= -197+525
add
-2b=328
divide
b= -164

<h3>Further explanation</h3>
We will calculate the unit conversion factor used to convert its engine displacement from cubic-centimeters to cubic-inches.
The relationships between inch and cm are as follows:

Inches and cm represent units of length.
Made into fractions, 1 inch as the denominator and 2.54 cm as the numerator.

As a unit conversion factor of volume, the numerator and the denominator in cubic.


Thus, we get the unit conversion factor

Let's use this unit conversion factor to calculate its engine displacement in new units.

Note for cm³ units that have been crossed out.
The conversion result is 
<h3>Learn more</h3>
- Convert cubic-kilometers to cubic-meters brainly.com/question/1446243
- How to write in scientific notation brainly.com/question/7263463
- Calculating mass based on density and volume brainly.com/question/4053884
Keywords: the motorcycle engine, Kawasaki Ninja 1000, 1043 cubic-centimeters (cm³), to calculate, its engine displacement, in cubic-inches (in³), what unit conversion factor