Question

Multiply the following:(i) (3x+5) by 7x solution for class 7th

Answer 1

Answer is 21x² + 35x .

Step-by-step explanation:

Q. To multiply (3x+5) by 7x.

Solution:

(3x+5) X 7x

=> 7x(3x+5)

=> 21x² + 35x

Answer 2

Given: $(i) (3x+5)$

We have to multiply the above equation by$7x$.

• By using the multiplication property, we are solving the above equation.
• As we know that the multiplication is a method to get the product by multiplying two or more values.
• Multiplication is denoted by the symbol(x).

Following are some properties of multiplication:

1. Closure property of multiplication
2. Commutative property of multiplication
3. Associative property of multiplication
4. Distributive property of multiplication over addition
5. Identity property of multiplication
6. Zero property of multiplication

We are solving in the following way:

We have,

$(3x+5)\times7x\\=>3x\times7x+5\times7x\\=>21x^{2} +35x$

Hence, the solution of the above equation is$21x^{2} +35x$.