Question

1. Find the value of 3x - 4x +7x-5 when X = 3 X=-3​

Answer 1

Answer:

x=3 =13

x=-3= -23

Step-by-step explanation:

a)3x-4x+7x-5                             b)3x-4x+7x-5    

 =3*3-4*3+7*3-5                        =3*-3-4*-3+7*-3-5

 =9-12+21-5                               =(-9)-(-12)+(-21)-5

 =13                                           =-23

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Answer 2

Given:

An equation is given to us which is 3x-4x+7x-5

Find:

Value of equation when x=3 and when x=-3?

Step-by-step explanation:

• We need to find the value equation when x=3 put the value of x in given equation.

              3x-4x+7x-5 at x=3

                  6x-5 at x=3

                  6(3)-5=13

• For the value of equation at x=-3 put it in given equation we get

                  3x-4x+7x-5 at x=-3

                  6x-5 at x=-3

                  6(-3)-5=-18-5=-23

Thus value at x=3 is 13 and value at x=-3 is -23