Please help answer this question. what is the value of x? 4x-3=12
in Algebra 1 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

2 Answers

4x-3=12,

4x=15 (add 3 to each side),

x=15/4 (divide each side by 4),

x=3¾ (convert to mixed number, if necessary)

Another method (Do-Undo):

Remember: divide is multiply undone; add is subtract undone.

DO: 4 times x→subtract 3 from product→result is 12

Now reverse the process:

UNDO: Start with result 12→add 3=15→15 divided by 4→x=15÷4 or 15/4 or 3¾.

 

by Top Rated User (721k points)

4x-3 = 12

4x  = 12+3

4x = 15

x = 15÷4

x = 3.75

by
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
84,555 questions
89,526 answers
2,000 comments
13,985 users