Clever | Portal Math Lesson 1, i-Ready Equations with variables on bo khanacademy.org/math/cc-eighth-grade-math/cc-8th-solving-equations/variables-on-both-sides/e/linear_equations_3 Explore Search Khan Academy Donate 14440 Your last streak ended, so let's start building a new one today. week streak Level 2 streak \( 0 / 2 \) skills 8th grade COURSE: 8TH GRADE > UNIT 2 Lesson 1: Equations with variables on both sides Intro to equations with variables on... Equations with variables on both si... Not started Equation with variables on both sid... Equations with variables on both si... Equations with variables on both sides Solve for \( b \). \[ \begin{array}{l} 7 b-15=5 b-3 \\ b=\square \end{array} \] 8:53 Intro to equations with variables on both sides Equations with variables on both sides: \( 20-7 x=6 x-6 \) khanacademy.org/math/cc-eighth-grade-math/.../equations-3 Do 4 problems Skip Check
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Did you know that algebra has ancient roots? The word "algebra" comes from the Arabic term "al-jabr," which means "reunion of broken parts." Persian mathematician Muhammad ibn Musa al-Khwarizmi, often regarded as the father of algebra, wrote the groundbreaking work "Al-Kitab al-Mukhtasar fi Hisab al-Jabr wal-Muqabala" in the 9th century! Talk about a cool history lesson—math has been uniting variables for centuries! Speaking of variables, solving equations with variables on both sides can be tricky! A common mistake is forgetting to perform the same operation on both sides of the equation. For example, if you're solving \( 7b - 15 = 5b - 3 \), always remember to first isolate the variable by moving terms from one side to the other! Adding or subtracting terms carefully will save you from errors and help you find the value of \( b \) in no time!
