Question

Find the value of the rational number 'x' to make the statement correct. (a) x +(-3/2) = (-3/2) + 7/8 (b) (-3/4) + (-7/8) = x + (-3/4) (c) (4/7+x) + 9/ 11 = 4/7 (3/8 + 9/11) Plz answer fast....plz plz plz..... It's very urgent Plz!!!!

Answer 1

using commutative property

A + B = B + A

a) x + ( -3) + -3 + 7 , so x = 7

2 2 8 8

b) (_3 ) + (-7 ) = x + (-3) , so x = -7

4 8 4 8

using associative property

(A +B ) + C = A + ( B + C )

c) ( 4 + x) + 9 == 4 + ( 3+ 9), so, x = 3

7 11 7 8 11 8

so all statements are true