Question

preciso de fazer essa folha para amanhã

Answer 1

a) 2x-8=8
2x= 8+8
2x= 16
x=16/8
x=8

b)3x+1=19
3x=19-1
3x=18
x=18/3
x=6

c)7y-4=10
7y=10+4
7y=14
Y=14/7
Y=2

d)2t+1=-8
2t=-8-1
2t=-9
t=-9/2

e)11-3y=2
-3y=-11+2
-3y=-9 (-1)
3y=9
Y=9/2
y=3

f)3x=7-x
3x+x=7
4x=7
x=7/4

g)9x+5=4x
9x-4x=-5
5x=-5
x=5/5
x=1

h)20=-6x+32
6x=32-20
6x=12
x=12/6
x=2