Question

resolva as equações
g)7×+1=5×-7
h)4×+5=×+20
i)3(×+2)=2(×-7)
j)2(×+5)-4=26
k)3(×+3)-5=22
l)4(2×-1)=3(×+2)​

Answer 1

G)
7x+1=5x-7
7x-5x=-7-1
2x=-8
X=-8/2
X=-4

H)
4x+5=x+20
4x-x=20-5
3x=15
X=15/3
X=5

I)
3(x+2)=2(x-7)
3x+6=2x-14
3x-2x=-14-6
X=-20

J)
2(x+5)-4=26
2x+10-4=26
2x=26-10+4
2x=20
X=20/2
X=10

K)
3(x+3)-5=22
3x+9-5=22
3x=22-9+5
3x=18
X=18/3
X=6

L)
4(2x-1)=3(x+2)
8x-4=3x+6
8x-3x=6+4
5x=10
X=10/5
X=2