Question

упростите выражения 15х+7х-х 10а+13с-5а+3с 6×(3х+5у)+7х-5у 4×(3х+23)+7(6+5х)

Answer 1

15x+7x-x=21x; 10a+13c-5a+3c=5a+16c; 6*(3x+5y)+7x-5y=18x+30y+7x-5y=25x+25y; 4*(3x+23)+7(6+5x)=12x+92+42+35x=47x+134.

Answer 2

15+7-1*x, 10+5*a-13+3*c,