Question

Determine x:

a) 6x=2x+16

b) 2x-5=x+1

c) 2x+3=x+4

d) 5x+7=4x+10

e) 4x-10=2x+2

f) 4x-7=8x-2
?

Answer 1

a) 6x=2x+16
6x - 2x = 16
4x = 16
x= 16 ÷ 4
x= 4

b) 2x-5=x+1
2x - x = 1 + 5
x = 6

c) 2x+3=x+4
2x -x = 4 - 3
x = 1

d) 5x+7=4x+10
5x - 4x = 10 - 7
x = 3

e) 4x-10=2x+2
4x - 2x = 2 + 10
2x = 12
x = 12 ÷ 2
x = 6

f) 4x-7=8x-2 
4x -8x = -2 + 7
-4x = 5
x= 5÷-4
x= -1,25  " resposta pode estar na forma fracionada 5/-4 ou decimal"

Answer 2

a)6x=2x+16
6x-2x=16
4x=16
x=16/4
x=4
b)2x-5=x+1
2x-x=1+5
x=6
c)2x+3=x+4
2x-x=4-3
x=1
d)5x+7=4x+10
5X-4X=10-7
X=3
e) 4x-10=2x+2
4x-2x=2+10
2x=12
x=12/2
x=6
f)4x-7=8x-2
4x-8x=-2+7
-4x=5
x=5/-4

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