Answer:
x = 3
Step-by-step explanation:
Isolate the variable, x. Note the equal sign, what you do to one side you do to the other. Do the opposite of PEMDAS.
First, subtract 7 from both sides:
3x + 7 (-7) = 16 (-7)
3x = 16 - 7
3x = 9
Isolate the variable x. Divide 3 from both sides:
(3x)/3 = (9)/3
x = 9/3
x = 3
x = 3 is your answer.
~
3х +7=16
move +7 to the other side
sign changes from +7 to -7
3x+7-7= 16-7
3x=9
divide both sides by 3 to get x by itself
3x/3= 9/3
x= 3
Answer: x= 3
