Question

B) 4×+2=17— ×
C) 8—5. (y—1)= 28
D) —3. (a—3)= — 36
E) 2. (×—3)= 3× + 7
F) 5. (3× +2)= 10. (× +3)
Gent alguém me ajuda por favor.

Answer 1

B)4x+2=17-x
4x+x=17-2
5x=15
x=3

C) 8-5.(y-1)=28
8-5y+5=28
13-5y=28
-5y=28-13
-5y=15
y=-3

D) -౩.(a-3)=-36
a-3=12
a=12+3
a=15

E) 2.(x-3)=3x+7
2x-6=3x+7
2x-3x=7+6
-x=1౩
x=-13

F) 5.(3x+2)=10.(x+3)
15x + 10=10x+30
15-10x+30
15-10x=30-10
5x=20
x=4