Question

resolva as equaçoes do 1 grau

10x-45=7x

8x+15=6x-5

25-x=9x+5

Answer 1

10x-7x= 45
3x=45
x=15

8x-6x=-5-15
2x= -20
x= -10

25-5= 9x+x
20=10x
x=2