128k views
3 votes
How do I find the answer to -(1.1x+2)+8=x+3(2.2x+2) ?

1 Answer

2 votes

Answer:

x = 0

Explanation:

-(1.1x+2)+8=x+3(2.2x+2)

expand 3(2.2x+2) : 6.6x+6

3(2.2x+2)

apply distributive law: a(b+c)= ab +ac

a=3, b=2.2x, c=2

= 3·2.2x+3·2

simplify 3·2.2x+3·2 : 6.6x+6

multiply the numbers: 3·2.2=6.6

= 6.6x+3·2

multiply the numbers: 3·2=6

=6.6x+6

-1.1x+6=x+6.6x+6

add similar elements: x-6.6x=7.6x

-1.1x+6=7.6x+6

expand -(1.1x+2)+8: -1.1x+6

-(1.1x+2)+8

-(1.1x=2)+2): -1.1x-2

=-1.1x-2+8

Add/Subtractthenumbers:-2+8=6

=-1.1x+6

-1.1x+6=7.6x+6

move 6 to the right side

-1.1x+6=7.6x+6

Subtract 6 from both sides

-1.1x+6-6=7.6x+6-6

simlify

-1.1x=7.6x

move 7.6x to the left side

-1.1x=7.6x

subtract 7.6x from both sides

-1.1x-7.6x=7.6x-7.6x

simplify

-8.7x=0

divide both sides by -8.7


(-8.7x)/(-8.7) = (0)/(-8.7)

simplify

x=0

User Simo
by
7.5k points