Question

I need help to solve Multi-step equations variables on each side. Here's some problems...
-45m+68=84m-61
4-2x=-5x-1
0.3x-15=0.2x-5
3/4w-5=1/4w-1
3b+2=6(3-b)

Answer 1

How far did you get?
This is something you should learn now, because lots of math requires you to know how to do it. If you lose the bubble now, it will be very unpleasant in later math classes.

Answer 2

Well I got to the part on the P.E.M.D.A.S but after that I got confused. Like on the first problem -45m+68=84m-61 I would have to subtract and divide, I think.

Answer 3

in
-45m +68 = 84m - 61
I see a -45 m on the left side.
I would add +45 m to both sides. that means write +45m on both sides
-45m + 45m + 68 = 84m +45m - 61

on the left side you have 45 m's take away 45 m's
how many m's are left ?

Answer 4

0?

Answer 5

yes so the left side is
0 + 68 = 84m + 45m - 61

of course, 0+68 is just 68, so you have
68= 84m + 45m - 61

on the right side you have 84 m's plus 45 m's
how many m's do you have ?

Answer 6

129 m's

Answer 7

and you should write out the entire equation (good habit to get into)
68 = 129 m - 61

now add +61 to both sides. that means write +61 on both sides
can you do that ?

Answer 8

68+61 = 129 m - 61+61

Answer 9

can you simplify the left side ?

Answer 10

68+61=129m-0?

Answer 11

yes, on the right side.
now the left side

Answer 12

129=129m-0?

Answer 13

yes. and adding 0 or subtracting 0 does not "do anything"
so you have
129= 129m

now divide both sides by 129

Answer 14

like this
\[ \frac{129}{129}= \frac{129}{129} m \]

Answer 15

what is 129 divided by itself ?
what is anything divided by itself ?

Answer 16

1

Answer 17

so simplify the equation
\[ \frac{129}{129}= \frac{129}{129} m \]

Answer 18

1=1m

Answer 19

yes, and usually we don't write 1m
that means 1 times m
and 1 times anything is the anything.
in other words 1*m = m
so we just write
1= m
or more usually
m=1

Answer 20

Ohhh okay, thank you

Answer 21

can you try the next problem

4-2x=-5x-1


I usually look at the terms with the "x"
I would add +5x to both sides.
can you do that ?

Answer 22

4-2x=5x+5x-1
Like that?

Answer 23

first, you have to do it both sides (to keep the sides equal)
also, the right side should be -5x+5x-1
(you left out a minus sign)

Answer 24

4-2x=-5x-1
becomes
4-2x+5x = -5x+5x -1

Answer 25

Then what do I do. Okay well I have to goo, bye,

Answer 26

simplify both sides
on the left you have 5 x's take away 2 x's
on the right side you have 5 x's take away 5 x's

Answer 27

4-3=0-1? I think I'm kindaa getting it