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"Algebraic expressions
Algebraic equations consist of several terms with mathematical operations. Mathematical statements can be expressed in algebraic equations. The Equation represents for the marbles is 2x-3=21.
Further explanation
Algebraic expressions in mathematics are a combination of coefficients, numbers, variables, constants, and arithmetic operations such as addition, subtraction, multiplication, and division.
The main composition of algebraic expressions are:
1. phrases
algebraic forms separated by arithmetic operations
consists of one phrase (monomial) to many phrases (polynomial)
2. variable
is a value that can be changed, can be in the form of letters, for example, x, y, a, b, etc.
3. constants
is a fixed value, can be a number
4. arithmetic operations ⇒ +, -,:, x
Calculation operations include multiply, divide, add, subtract, etc.
Geraldo has 3 fewer marbles than Yan
We state in Algebraic expressions :
x = variable for marbles
Yan's marbles = x
Geraldo's marbles = x-3
Total marbles = 21
then :
Yan's marbles + Geraldo's marbles = 21
x + x - 3 = 21 ⇒combine like terms
x + x = 21 + 3
2x = 24 ⇒ divide both sides by 2
2x : 2 = 24 : 2
x = 12
So Yan's marbles = x = 12
Geraldo's marbles = x - 3 = 12 - 3 = 9
Learn more
The equation represents the number of glasses : brainly.ph/question/1267795
The total distance traveled : brainly.ph/question/1932180
Jin has run 2.7 km in two weeks : brainly.ph/question/2720996
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