Substitution

Front

What is substitution in mathematics?

Back

Substitution is a method of replacing a variable in an expression or equation with a specific value to simplify or solve it.

Front

If j = 4, what is the value of 2j + 3?

Back

11

Front

How do you evaluate an expression with given variable values?

Back

Substitute the given values into the expression and perform the arithmetic operations.

Front

If a = 6 and b = 7, what is the value of 15 - a - b?

Back

2

Front

What is the result of 6h + 30 when h = 6?

Back

66

Front

If b = 7 and e = 2, what is the value of 3b + e?

Back

23

Front

How do you evaluate 2a + 4b if a = 10 and b = 6?

Back

Substitute a and b into the expression: 2(10) + 4(6) = 20 + 24 = 44.

Front

What is the first step in solving an equation using substitution?

Back

Identify the variable to be substituted and the value it will be replaced with.

Front

What is the importance of substitution in solving equations?

Back

Substitution allows for simplification of expressions and helps in finding the value of unknown variables.

Front

Can substitution be used in both linear and non-linear equations?

Back

Yes, substitution can be applied to both linear and non-linear equations.