Question

If a₁ = a + 2a +3 and d₂ = 2a + a + 1, what is the value of 2 (d1- d2)?

Answer 1

With the help of equations, we know that the value of equation 2(d1- d2) is 4.

What is an equation?

• A mathematical expression with an equals sign is referred to as an equation.
• Algebra is widely used in equations.
• When performing calculations but unsure of the precise amount, algebra is used.
• The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.
• For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

The equations we have are as follows:

• d1 = a+2a+3
• d2 = 2a+a+1

After simplifying, d1= 3a+3:

• d2 = 3a+1
• 2(d1-d2) = 2(3a+3-3a-1)
• =2(2)
• = 4

Therefore, with the help of equations, we know that the value of equation 2(d1- d2) is 4.

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