Question

Find the vaule of 3x + 2 when 7 +x =5

Answer 1

-4

Explanation:

when 7 +x =5 solve for x by subtracting 7

x=5-7 =-2

3x+2 = substitute (-2) for x

3( )+2

3(-2)+2

-6+2=-4

Answer 2

=> -4

Explanation:

7 + x = 5

=> x = 5 - 7

=> x = -2

Putting the value of x = -2 in equation 3x + 2

=> 3(-2) + 2

=> -6 + 2

=> -4