f) 3 ( x –2) = 4(3 – x) (R:18/7)
g) 3 ( 3x – 1) = 2 ( 3x + 2) ( R: 7/3)
h) 7 ( x – 2 ) = 5 ( x + 3 ) (R: 29/2)
i) 3 (2x – 1) = -2 ( x + 3) (R: -3/8)
j) 5x – 3( x +2) = 15 (R: 21/2)
k) 2x + 3x + 9 = 8(6 –x) (R:3)
l) 4(x+ 10) -2(x – 5) = 0 (R: -25)
m) 3 (2x + 3 ) – 4 (x -1) = 3 ( R: -5)
n) 7 (x – 1) – 2 ( x- 5) = x – 5 (R: -2)
o) 2 (3 – x ) = 3 ( x -4) + 15 (R: 3/5)
p) 3 ( 5 – x ) – 3 ( 1 – 2x) = 42 (R:10)
q) ( 4x + 6) – 2x = (x – 6) + 10 +14 (R:12)
r) ( x – 3) – ( x + 2) + 2( x – 1) – 5 = 0 ( R:6)
s) 3x -2 ( 4x – 3 ) = 2 – 3( x – 1) ( R ½)
t) 3( x- 1) – ( x – 3) + 5 ( x – 2) = 18 ( R: 4)
u) 5( x – 3 ) – 4 ( x + 2 ) = 2 + 3( 1 – 2x) (R:4)
POR FAVOR ME AJUDA É PRA AMANHÃ
Soluções para a tarefa
Resposta:
eu te ajuda hoje não tem aula
Resposta:Segue as contas abaixo na explicação
Explicação passo-a-passo:
f)3( x –2)= 4(3 – x) g)3( 3x – 1)=2( 3x + 2) h)7( x – 2 ) = 5( x + 3 )
3x-6=12-4x 9x-3=6x+4 7x-14=5x+15
3x+4x=12+6 9x-6x=4+3 7x-5x=15+14
7x=18 3x=7 2x=29
x=18/7 x=7/3 x=29/2
i)3(2x – 1) = -2( x + 3) j) 5x–3( x +2) = 15 k) 2x + 3x + 9 = 8(6 –x)
6x-3=-2x-6 5x-3x-6=15 5x+9=48-8x
6x+2x=-6+3 2x-6=15 5x+8x=48-9
8x=-3 2x=15+6 13x=39
x=-3/8 2x=21 x=39/13
x=21/2 x=3
l)4(x+ 10) -2(x–5) = 0 m)3(2x + 3 )–4 (x -1)=3 n)7(x–1)–2 (x- 5) =x-5
4x+40-2x+10=0 6x+9-4x+4=3 7x-7-2x+10=x-5
2x+50=0 2x+13=3 5x+3=x-5
2x=-50 2x=3-13 5x-x=-5-3
x=-50/2 2x=-10 4x=-8
x=-25 x=-10/2 x=-8/4
x=-5 x=-2
o)2(3–x) =3(x-4) + 15 p)3(5–x)–3(1–2x) = 42 q)(4x+6)–2x=(x–6)+10+14
6-2x=3x-12+15 15-3x-3+6x=42 4x+6-2x=x-6+24
6-2x=3x+3 3x+12=42 2x+6=x+18
-2x-3x=3-6 3x=42-12 2x-x=18-6
-5x=-3(-1) 3x=30 x=12
5x=3 x=30/3
x=3/5 x=10
r)(x–3)–(x+2)+2(x–1)–5=0 s)3x-2(4x–3)=2–3(x–1)
x-3-x-2+2x-2-5=0 3x-8x+6=2-3x+3
3x-x-12=0 -5x+6=-3x+5
2x-12=0 -5x+3x=5-6
2x=12 -2x=-1(-1)
x=12/2 2x=1
x=6 x=1/2
t)3(x-1)–(x–3)+5(x–2)=18
3x-3-x+3+5x-10=18
8x-x-13+3=18
7x-10=18
7x=18+10
7x=28
x=28/7
x=4