Select each pair of expressions that are equivalent. A). 3x + 1/4 - x + 1 1/2 and 4x + 1 3/4
B). 2 + 6x and 2(3x + 1)
C). 3(x + 1) - (1-x) and 2x + 3
E). 3x and 4(x + 1) - x -4
D). 5.5 + 2.2x + 3.8x - 4.1 and 1.4 + 6x

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.