k) 5x - 5 + x = 9 + x
l) 7x - 4 - x = -2x + 8 - 3x
m) -x - 5 + 4x = -7x + 6x + 15
n) 3x - 2x = 3x + 2
o) 2 - 4x = 32 - 18x + 12
p) 2x - 1 = -3 + x + 4
q) 3x - 2 - 2x - 3 = 0
r) 10 - 9x + 2x = 2 - 3x
s) 4x - 4 - 5x = -6 + 90
t) 2 - 3x = -2x + 12 - 3x

Q: k) 5x - 5 + x = 9 + x l) 7x - 4 - x = -2x + 8 - 3x m) -x - 5 + 4x = -7x + 6x + 15 n) 3x - 2x = 3x + 2 o) 2 - 4x = 32 - 18x + 12 p) 2x - 1 = -3 + x + 4 q) 3x - 2 - 2x - 3 = 0 r) 10 - 9x + 2x = 2 - 3x s) 4x - 4 - 5x = -6 + 90 t) 2 - 3x = -2x + 12 - 3x

Vamos resolver cada uma das equações: **k)** $5x - 5 + x = 9 + x$ \[5x + x - x = 9 + 5\] \[5x = 14\] \[x = \frac{14}{5}\] **l)** $7x - 4 - x = -2x + 8 - 3x$ \[6x - 4 = -5x + 8\] \[6x + 5x = 8 + 4\] \[11x = 12\] \[x = \frac{12}{11}\] **m)** $-x - 5 + 4x = -7x + 6x + 15$ \[3x - 5 = -x + 15\] \[3x + x = 15 + 5\] \[4x = 20\] \[x = 5\] **n)** $3x - 2x = 3x + 2$ \[x = 3x + 2\] \[x - 3x = 2\] $-2x = 2$ \[x = -1\] **o)** $2 - 4x = 32 - 18x + 12$ \[2 - 4x = 44 - 18x\] \[18x - 4x = 44 - 2\] \[14x = 42\] \[x = 3\] **p)** $2x - 1 = -3 + x + 4$ \[2x - 1 = x + 1\] \[2x - x = 1 + 1\] \[x = 2\] **q)** $3x - 2 - 2x - 3 = 0$ \[x - 5 = 0\] \[x = 5\] **r)** $10 - 9x + 2x = 2 - 3x$ \[10 - 7x = 2 - 3x\] \[-7x + 3x = 2 - 10\] \[-4x = -8\] \[x = 2\] **s)** $4x - 4 - 5x = -6 + 90$ \[-x - 4 = 84\] \[-x = 88\] \[x = -88\] **t)** $2 - 3x = -2x + 12 - 3x$ \[2 - 3x = -2x + 12 - 3x\] \[2 = -2x + 12\] \[2x = 10\] \[x = 5\]

Question

Accepted Answer

Vamos resolver cada uma das equações:

**k)** $5x - 5 + x = 9 + x$

$$5x + x - x = 9 + 5$$

$$5x = 14$$

$$x = \frac{14}{5}$$

**l)** $7x - 4 - x = -2x + 8 - 3x$

$$6x - 4 = -5x + 8$$

$$6x + 5x = 8 + 4$$

$$11x = 12$$

$$x = \frac{12}{11}$$

**m)** $-x - 5 + 4x = -7x + 6x + 15$

$$3x - 5 = -x + 15$$

$$3x + x = 15 + 5$$

$$4x = 20$$

$$x = 5$$

**n)** $3x - 2x = 3x + 2$

$$x = 3x + 2$$

$$x - 3x = 2$$

$-2x = 2$

$$x = -1$$

**o)** $2 - 4x = 32 - 18x + 12$

$$2 - 4x = 44 - 18x$$

$$18x - 4x = 44 - 2$$

$$14x = 42$$

$$x = 3$$

**p)** $2x - 1 = -3 + x + 4$

$$2x - 1 = x + 1$$

$$2x - x = 1 + 1$$

$$x = 2$$

**q)** $3x - 2 - 2x - 3 = 0$

$$x - 5 = 0$$

$$x = 5$$

**r)** $10 - 9x + 2x = 2 - 3x$

$$10 - 7x = 2 - 3x$$

$$-7x + 3x = 2 - 10$$

$$-4x = -8$$

$$x = 2$$

**s)** $4x - 4 - 5x = -6 + 90$

$$-x - 4 = 84$$

$$-x = 88$$

$$x = -88$$

**t)** $2 - 3x = -2x + 12 - 3x$

$$2 - 3x = -2x + 12 - 3x$$

$$2 = -2x + 12$$

$$2x = 10$$

$$x = 5$$

k) 5x - 5 + x = 9 + x l) 7x - 4 - x = -2x + 8 - 3x m) -x - 5...

k) 5x - 5 + x = 9 + x l) 7x - 4 - x = -2x + 8 - 3x m) -x - 5 + 4x = -7x + 6x + 15 n) 3x - 2x = 3x + 2 o) 2 - 4x = 32 - 18x + 12 p) 2x - 1 = -3 + x + 4 q) 3x - 2 - 2x - 3 = 0 r) 10 - 9x + 2x = 2 - 3x s) 4x - 4 - 5x = -6 + 90 t) 2 - 3x = -2x + 12 - 3x

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