25 + 6x = 21 + 4x

solve for the letter x

please help so i can understand it

x=-2

Step-by-step explanation:

25+6x=21+4x

Step 1: Simplify both sides of the equation.

6x+25=4x+21

Step 2: Subtract 4x from both sides.

6x+25−4x=4x+21−4x

2x+25=21

Step 3: Subtract 25 from both sides.

2x+25−25=21−25

2x=−4

Step 4: Divide both sides by 2.

x=−2

b

step-by-step explanation:

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify