Question

упростите выражения 7у-у+2у=
3х+(2х+11)=
(5х+9х)-6х=
13z-(2z=4z)=

Answer 1

7y-y+2y=8y
3x+(2x+11x)=3x+13X=16x
(5x+9x)-6x=14x-6x=8x
13z-(2z+4z)=13z-6z=7z

Answer 2

7у-у+2у= 8у
3х+(2х+11х)=3х+13х=16х
(5х+9х)-6х=14х-6х=8х
13z-(2z+4z)=13z-6z=7z