Question

Me ajudem♡☆¿ Arme e resolva as equações: 1)4(x+3)=1 2)3 (x-2)=2x-4 3)3(x-1)-7=15 4)7(x-4)=2x-3 5)3(3x-1)=4(3-x) 6)3(3x-1)=2(3x+2) 7)7(x-2)=5(x+3) 8)3(2x-1)=-2(x+3) 9)5x-3(x+2)=15 10)2x+3x+9=8(6-x) 11)4(x+10)-2(x-5)=0 12)3(2x+3)-4(x-1)=3 13)13+4(2x-1)=5(x+2) 14)4(x+5)+3(x+5)=21 15)2(x+5)-3(5-x)=10

Answer 1

1)
4(x+3)=1
4x+12=1
4x=1-12
x=-11/4

2)
3(x-2)=2x-4
3x-6=2x-4
3x-2x=4-6
x=-2

3)
3(x-1)-7=15
3x-3-7=15
3x-10=15
3x=15+10
3x=25
x=25/3

4)
7(x-4)=2x-3
7x-28=2x-3
7x-2x=-3+28
5x=25
x=25/5
x=5

5)3(3x-1)=4(3-x)
9x-3=12-4x
9x+4x=12+3
13x=15
x=15/13

6)3(3x-1)=2(3x+2)
9x-3=6x+4
9x-6x=4+3
3x=7
x=7/3

7)
7(x-4)=5(x+3)
7x-28=5x+15
2x=15+28
x=43/2

(o restante segue padrão semelhante)