Упростите выражения: 25х + 15х = 8m + m = z + 19z = 12y -2y = 8b + b - 9b = 4a - 3a + 5b- b = 7x + 3x + 43 =
25x+15x=8m+m=z+19z=12y-2y=0=7a+4b=10x+43
40x=9m=20z=10y=7a+4b=10x+43
30x=9m=20z=10y=7a+4b=43