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

Make sure you set the two expressions equal to each other. 5.3(4x-2.6)=21.2x
NOw that that's done, distribute 5.3 to 4x and 2.6. 21.2x-13.78=21.2x Now you get all the x's on one side of the equation. But since they are the same number and subtracting one from the other would result in an answer of 0x. So the answer would be -13.78. I hope this is correct!

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3