Question

a) 2x+3x+9=8 (6-x)

b)4 (x+10)-2 (x-5)=0

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

d)7 (x-1)-2 (x-5)=x-5

e)2 (3-x)=3 (x-4)+15

f)3(5-x)-3 (1-2x)=42

Answer 1

a) 2x+3x+9=8 (6-x)

5x+9=48-8x

5x+8x=48-9

13x=29

x=29/13

b)4 (x+10)-2 (x-5)=0

4x-2x+40+10=0

2x=-50

x=-50/2

x=-25

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

6x+9-4x+4=3

2x=3-13

2x=-10

x=-10/2

x=-5

d)7 (x-1)-2 (x-5)=x-5

7x-7-2x+10-x=-5

4x=-5+7-10

4x=-8

x=-8/2

x-4


e)2 (3-x)=3 (x-4)+15

6x-2x=3x-12+15

6x-3x=3

3x=3

x=3/3

x=1


f)3(5-x)-3 (1-2x)=42

15-3x-3+6x=42

3x=42+3

3x=45

x=45/3

x=15


espero ter ajudado!

bom dia !


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