Question

OLÁ POR FAVOR ME AJUDEM SOU DO SÉTIMO ANO E MINHA PROFESSORA ME PASSOU UM EXERCÍCIO DO 1 GRAU
a)x+1=2
b)2x-4=4
c)5+x=23
d)3x+4x+1=50
e)6+4x+2x=42
f) 5x+4+3x=18
g)x+2x-4=5x+6
h)2x-4x+3x=5-3x-x
i)x+15=30-2x
j)x+2x-6=0
k)3x-x+5=18
l)5x+7=2x+13
m)5x+5=4x-1
n)4x-11=3x+1
o)3(x-1)=8
p)5(1-x)=7
q)2(4x-3)=6x-1
r)2(x+1)=9
s)5(2x+1)=4(x-1)

Answer 1

Ta poca espera vou resolver todos e te falo beleza?

Answer 2

a)x+1=2==> x = 2-1 ==. x = 1
b)2x-4=4==> 2x = 4+4 ==>2x=8 ==> x = 4
c)5+x=23==> x = 23-5 ==> x = 18
d)3x+4x+1=50==> 7x=50-1==>7x=49==>x=7
e)6+4x+2x=42==>6x=42-6==>6x=36==>x = 6
f) 5x+4+3x=18==>8x=18-4==>8x=14==\. x= 14/8
g)x+2x-4=5x+6==>3x-5x=6+4==.-2x=10(-1)==>2x=-10==>x=-5
h)2x-4x+3x=5-3x-x==>x+4x=5==>5x=5==>x=1
i)x+15=30-2x==>x+2x=30-15==>3x=15==>x=5
j)x+2x-6=0==>3x=6==>x=2
k)3x-x+5=18==>2x=18-5==>2x=13==>x=13/2
l)5x+7=2x+13==>5x-2x=13-7==>3x=6==>x=2
m)5x+5=4x-1==.5x-4x=1+11==>x=12
n)4x-11=3x+1==>4x-3x=1-11==>x= - 10
o)3(x-1)=8==>3x-3=8==>3x=8+3==>3x=11==>x=11/3
p)5(1-x)=7==>5 -5x=7==>-5x=7-5==>-5x=2(-1)==>5x=-2==>x= -2/5
q)2(4x-3)=6x-1==>8x-6=6x-1==>8x-6x=-1+6==>2x=5==>x=5/2
r)2(x+1)=9==>2x+2=9==>2x=9-2==>2x=7==>x=7/2
s)5(2x+1)=4(x-1)==>10x+5=4x-4 ==>10x-4x= -4-5==>6x= -9 ==> x= -9/6