Manipulate the equation := 4 so that there is an r term on the right-hand side of the equality and a 7 anywhere on the left-hand side of the equality (while preserving the
relationship).

45

step-by-step explanation:

30+15

kjgfcvbjkl

step-by-step explanation:

sdfghjkl; vbnm,

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.