Question

1)Resolva as Equações, Sendo U=R

A)3x+10=2x+15


C)4 (x-1)+2 (x-3)=5(x-1)+13


D)8(x+2)-3(×-1)-8=4(×-1)+15​

Answer 1

Resposta:

A)3x+10=2x+15

3x-2x=15-10

X=5

C)4 (x-1)+2 (x-3)=5(x-1)+13

4x-4+2x-6=5x-5+13

4x+2x-5x=-5+13+4+6

X=18

D)8(x+2)-3(×-1)-8=4(×-1)+15​

8x+16-3x+3-8=4x-4+15

8x-3x-4x=-4+15-16-3+8

X=0