Fractions I
What do you call a letter that represents a specific number in Mathematics?
Variable
Write the algebraic expression as described:
"6 plus x"
6 + x
Write the algebraic expression as described:
"7 times k"
7k
Solve.
x = 6 - 2
x = 4
Solve.
3x = 9
x = 3
What is the name of the number that multiplies the variable?
Coefficient
Write the algebraic expression as described:
"5 decreased from p"
p - 5
Write the algebraic expression as described:
"5 divided by 2x"
5 / 2x
Solve.
9 + x = 16
x = 7
Solve.
x / 2 = 15
x = 30
Identify the variable(s) and/or coefficient(s):
3x + 4 = 9
Variable: x
Coefficient of x: 3
Write the algebraic expression as described:
"x more than y minus 4"
y + x - 4
Write the algebraic expression as described:
"3x divided by 2y times 4"
3x / 8y
Solve.
43 - x = 19
x = 24
Solve.
6x = 15
x = 5/2
What is the difference of an expression and an equation?
An expression does NOT have an equals (=) sign while an equation has.
Write the algebraic expression as described:
"12 more than z subtracted from y"
y - z + 12
Write the algebraic expression as described:
"5 more than the product of 6 and z"
5 + 6z
Solve.
3x + 7 = 2x + 10
x = 3
Solve.
11x + 13 = 64 + 4
x = 5
Identify the variable(s) and/or coefficient(s) present:
5x + 6y + 7z
And determine if the following is an expression or an equation
Coefficients: 5, 6 and 7
The following is an expression
Write the algebraic expression as described:
"6x more than 5y subtracted from 11"
11 - 5y + 6x
Write the algebraic expression as described:
"The sum of 5 and y multiplied by 6"
6 * (5 + y)
Solve.
x + 13 = 2x + (-8)
x = 21
Solve.
24x + 16 = 8x + 160
x = 9