Question

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i) 4.x - 14 = 2.x + 8

j) 3.x - 2.x = 45 + 4

k) 6.x + 4.x - 3.x = 168

l) 2.x + 3.x + 8 = 48

m) 10.x = 150

n) x - 2 = 33

o) 2.x + x = 90

p) 4.x + 4.x = 100 + 4

q) x = 28 - 1

r) 10.x - 8.x - x = 20 + 8

s) 2.x + x = 99

t) x = 3 . 15

Answer 1

Explicação passo-a-passo:

i)

4.x - 14 = 2.x + 8

4x-14=2x+8

4x-2x=8+14

2x=22

x=22/2

*x=11*

j)

3.x - 2.x = 45 + 4

3x-2x=49

*x=49*

k)

6.x + 4.x - 3.x = 168

6x+4x-3x=168

7x=168

x=168/7

*x=24*

l)

2.x + 3.x + 8 = 48

2x+3x+8=48

5x=48-8

5x=40

x=40/5

*x=8*

m)

10.x = 150

10x=150

x=150/10

*x=15*

n)

x - 2 = 33

x=33+2

*x=35*

o)

2.x + x = 90

2x+x=90

3x=90

x=90/3

*x=30*

p)

4.x + 4.x = 100 + 4

4x+4x=104

8x=104

x=104/8

*x=13*

q)

x = 28 - 1

*x=27*

r)

10.x - 8.x - x = 20 + 8

10x-8x-x=28

*x=28*

s)

2.x + x = 99

2x+x=99

3x=99

x=99/3

*x=33*

t)

x = 3 . 15

*x=45*