Algebra 1
5x + 2 (x+4)= 64
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Step 1: Simplify both sides of the equation.

5x + 2 (x+4) = 64

5x + (2)(x) + (2)(4) = 64 (Distribute)

5x + 2x + 8 =64

(5x+2x) + (8) = 64(Combine Like Terms)

7x + 8 = 64

Step 2: Subtract 8 from both sides.

7x + 8 − 8 = 64 − 8

7x = 56

Step 3: Divide both sides by 7.

7x/7  =  56/ 7

x=8

I use Algebra Calculator MathPapa it shows the steps.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.