8x minus 8 times 3 equals 2x?

8x minus 8 times 3 equals 2x?


 



1.8x-9 is equal to the solution of 0.8x equation





How to find the two X of the simple equation of grade five in primary school?
It's a 4x + 5x type
It's the type of 4x + 5x = 8.9!


Here's a way:
Replace 4 and 5 in the title with a and B, and then bring a and B into the equation, which becomes the following equation:
ax+bx=8.9
In the step-by-step solution, there are the following steps:
ax+bx=8.9
(a+b)x=8.9
x=8.9/a+b
It turns out to be this formula