A day full of math games & activities. Find one near you.

A day full of math games & activities. Find one near you.

A day full of math games & activities. Find one near you.

A day full of math games & activities. Find one near you.

# A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for use. How much wire is left

**Solution:**

Given, a wire is (7x - 3) m long

A length of (3x - 4)m is cut for use

We have to find the length of wire left.

Length of wire left = total length of wire - length of wire cut for use

= (7x - 3) - (3x - 4)

= 7x - 3 - 3x + 4

By combining like terms,

= 7x - 3x - 3 + 4

= (7 - 3)x + (-3 + 4)

= (4)x + (1)

= 4x + 1

Therefore, the length of wire left is 4x + 1 m

**✦ Try This:** Find the perimeter of the figure given below:

**☛ Also Check:** NCERT Solutions for Class 7 Maths Chapter 12

**NCERT Exemplar Class 7 Maths Chapter 10 Problem 83 (a)**

## A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for use. How much wire is left

**Summary:**

A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for use. The length of wire left is 4x + 1 metres

**☛ Related Questions:**

- A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for use. If this left out wire is . . . .
- Rohan's mother gave him ₹3xy² and his father gave him ₹5(xy²+2). Out of this total money he spent ₹( . . . .
- A triangle is made up of 2 red sticks and 1 blue stick. The length of a red stick is given by r and . . . .

Math worksheets and

visual curriculum

visual curriculum