The equation is 2.3 + r= 1.6

Apply subtraction property of equality: Subtract 2.3 from each side.

r + 2.3 2.3 = 1.6 - 2.3

r + 0 = 1.6 2.3                 (Apply additive inverse property: 2.3 2.3= 0)

r = 1.6 2.3                      (Apply additive identity property: x + 0 = x)

r =   0.7                            (Subtract: 1.6 2.3   = 0.7 )

Check:

To check the solution, substitute r =   0.7 in original equation.

2.3 + r = 1.6 2.3+ (0.7) = 1.6

2.30.7= 1.6                 (Product of two opposite signs is negative) \ \

1.6= 1.6                           (Subtract: 2.30.7= 1.6)

The statement is true.

The value of r= 0.7.