Question

if 4×-1=7 z= pls answer​

Answer 1

Answer:

In Examples 7 to 10, state whether the statements are True or False.

Example 7: 12 is a solution of the equation 4x – 5 = 3x + 10.

Solution: False

[LHS = 4 × 12 – 5 = 43

and RHS = 3 × 12 + 10 = 46 They are not equal.]

Example 8: A number x divided by 7 gives 2 can be written as

x +1

7

= 2.

Solution: False.

Example 9: x + 2 = 5 and 3x – 1 = 8 have the same solutions.

Solution: True

Example 10: The equation 3x + 7 = 10 has 1 as its solution.

Solution: True

In each of the Examples 11 to 13, form an equation for each statement.

Example 11 : One fourth of a number is 20 less than the number itself.

Solution : Let the number be x.

15-04-2018