Solve 3x + 0.7 = 0.7x - 2.9 Select the | Equatix - Math Solver

Fractions & Decimals

Ratios & Proportions

Basic Number Theory

Integers & Absolute Values

Factors & Multiples

Prime Factorization

Basic Equations & Inequalities

Coordinate Plane & Graphing

Linear Equations & Inequalities

Quadratic Equations

Polynomials & Factoring

Functions & Graphs

Systems of Equations

Trigonometric Functions

Trigonometric Identities & Equations

Right Triangle Trigonometry

Graphing Trigonometric Functions

Limits & Continuity

Derivatives & Applications

Integrals & Applications

Series & Sequences

Multivariable Calculus

Functions & Graphs

Polynomial & Rational Functions

Exponential & Logarithmic Functions

Sequences & Series

Descriptive Statistics

Normal Distribution

Hypothesis Testing

Regression Analysis

Linear Programming

Sets & Counting

Eigenvalues & Eigenvectors

Linear Transformations

Atomic Structure

Thermochemistry

Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$0.3 x + 0.7 = 0.7 x - 2.9$$

Solve for x

$x=9$

Steps for Solving Linear Equation

Subtract $0.7x$ from both sides.

$$0.3x+0.7-0.7x=-2.9$$

Combine $0.3x$ and $-0.7x$ to get $-0.4x$.

$$-0.4x+0.7=-2.9$$

Subtract $0.7$ from both sides.

$$-0.4x=-2.9-0.7$$

Subtract $0.7$ from $-2.9$ to get $-3.6$.

$$-0.4x=-3.6$$

Divide both sides by $-0.4$.

$$x=\frac{-3.6}{-0.4}$$

Expand $\frac{-3.6}{-0.4}$ by multiplying both numerator and the denominator by $10$.

$$x=\frac{-36}{-4}$$

Divide $-36$ by $-4$ to get $9$.

$$x=9$$