Question

What is the value of c when the expression 21.2x + c is equivalent to 5.3(4x − 2.6)?

Answer 1

Hi there! The answer is c = - 13.78

To find our answer we need to work out the parenthesis. This is for instance possible using rainbow technique.

$5.3(4x - 2.6) = \\ 5.3 \times 4x - 5.3 \times 2.6 = \\ 21.2x - 13.78$

Therefore the value of c = - 13.78.
~ Hope this helps you!

Answer 2

5.3(4x - 2.6) = 21.2x - 13.78
Comparing with 21.2x + c:-
the value of c = -13.78 Answer