5*(2-5x)+(-2-5x) 5a+(-2a+(-3a+1)) 2a-(-2a-(3a-5))

Question

5*(2-5x)+(-2-5x)
5a+(-2a+(-3a+1))
2a-(-2a-(3a-5))

Answer 1

5*(2-5x)+(-2-5x)= 10-25х-2-5х= 8-30х
5a+(-2a+(-3a+1))= 5a+(-2a-3a+1)= 5a-5a+1=1
2a-(-2a-(3a-5))= 2a-(-2a-3a+5)= 2a+5a-5=7a-5