Parentheses on Both Sides

Parte da seção Fundamentos do Journey de Math da Coddy. Lição 61 de 64.

Quatro desafios, cada um reunindo vários capítulos. O primeiro tem um colchete para abrir e x dos dois lados: distribute, reúna os termos com x, reúna os números, divida.

Desafio

Resolva a equação 3(2x - 1) = 4x + 7 para x.

Experimente você mesmo

3(2x - 1) = 4x + 7

Isole x

Teste seus conhecimentos

Esta lição inclui um quiz rápido. Comece a lição para respondê-lo e acompanhar seu progresso.

Todas as lições de Fundamentos

1What an Equation Is

The Equation Finding the Unknown The Same to Both Sides Solved Means Alone Recap: First Equations

4Two-Step Equations

Two Layers to Undo Subtract, Then Divide Add, Then Divide A Division Inside Negatives in Two Steps Recap: Two-Step Equations

7Fractions in Equations

A Fraction Coefficient Clearing One Denominator Two Denominators A Fraction Around a Sum Cross-Multiplying Recap: Fractions

10From Words to Equations

Phrases into Expressions Sentences into Equations Consecutive Numbers Age and Money A Perimeter Problem Recap: Words

3Negative Numbers

Below Zero A Negative Answer Negative Coefficients The Opposite of x Recap: Negatives

6Variables on Both Sides

x on Both Sides Gathering the x's Numbers and x's Everywhere Parentheses on One Side When x Is Negative Recap: Both Sides

9Special Cases

No Solution Always True Checking a Solution Recap: Special Cases

12Final Challenges

Parentheses on Both SidesFractions and x's Decimals on Both Sides The Story Problem