Lesson 78 of 84 · Sequences

hard

Sequences: 3x + 12 = 15

In this Grade 9 lesson on Sequences, you will practice solving problems like: "Solve for x: 3x + 12 = 15". Work through each problem carefully, use the hints if you need help, and check your answers. This builds your understanding of sequences step by step.

Nice work!

You got 0 of 5 right.

Next: Sequences: 4x + 13 = 25 All lessons

🎯

Next Smart Lesson

We'll pick a lesson that matches exactly where your math is right now.

✨ More to explore

🌍 Where you'd use this: Math is the secret language under everything you'll ever buy, play, build, or share.

🤯 Fun fact: 🤯 Math shows up in places nobody told you about — and once you see it, you can't unsee it.

🏆 Try this week: Find one math problem in real life today and solve it without a calculator.

👨‍👩‍👧 At dinner: “Show me one place math showed up today that nobody noticed.”

Challenge a friend

Send it to a parent looking for a 5-minute math win that doesn't feel like homework.

Ready?

Sequences: 3x + 12 = 15

Slow down. Math gets easier when you breathe.

Full screen — no distractions

Share to Google Classroom

Done with math? Try something else

🎮Math Games 📖Math Flashcards 🖨️Math Worksheet 🧪Science 💻Coding 🛍️Shop 🎲I'm Bored

🖨️

Print the whole Sequences track

All 9th Grade Sequences lessons as a printable PDF, with worksheets and answer keys.

Your Cart (0)

Your cart is empty

Browse our shop to find activities your kids will love

Sequences: 3x + 12 = 15 — Sequences | 9th Grade Math | LittleActivity