Question

50 points

enter the value of c when the expression 21.2x + c is equivalent to 5.3(4x - 2.6).

Answer 1

13.78

Explanation:

21.2x + c = 5.3(4x - 2.6)

open the bracket

21.2x + c = 21.2x - 13.78

collect like terms

c + 13.78 = 21.2x - 21.2x

c + 13.78 = 0

c = -13.78

Answer 2

c = -13.78.

Explanation:

21.2x + c ≡ 5.3(4x - 2.6)

21.2x + c ≡ 21.2x - 13.78

Equating constant terms:

c = -13.78.