Subtract by adding the opposite.
19-23=
-48-(80)=
-)=

Simplify the expression 8h - 57-3m by adding or subtracting the like term

Given lm, find the measure of (award brainliest)

Identify reflection rule on a coordinate plane that verifies that triangle a(-1,7), b(6,5), c(-2,2) and a’(-1,-7), b(6,-5), c’(-2,2) triangle are congruent when reflected over the x-axis