Solve for a

2a+3b=12-2(2b+a)

PLEASE SHOW WORK ILL MARK BRAINLIEST.

a = 3 - (7/4)b

Step-by-step explanation:

Start by performing the indicated multiplication:

2a+3b=12-2(2b+a)  =>  2a+3b=12 - 4b - 2a

Next, combine like terms:  4a + 7b = 12

Isolate 4a by subtracting 7b from both sides:  

4a = 12 - 7b

Finally, divide both sides by 4:

a = 3 - (7/4)b

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.