3 years ago

Can someone help me with this? And show me the work ASAP

1 answer:

8 0

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

2. -10b+5=7b+5
7b+10b=5-5
17b=0
b=0

3. r+15=4r-6
4r-r=15+6
3r=21
r=21/3
r=7

4. 10-2v=-5v-50
-2v+5v=-50-10
3v=-60
v=-60/3
v=-20

5. 15y+3=18y
18y-15y=3
3y=3
y=3/3
y=1

6. -2x+6=4x+9
4x+2x=6-9
6x=-3
x=-3/6
x=-1/2

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X=1/2 hope this helps <3

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3 years ago

All of the following expressions simplify to -5x + 7, except ( x - 2) - (6 x - 9) (5 x + 1) - (-10 x + 6) -4 x + 2 x + 7 - 3 x (

storchak [24]

Answer:

(5 x + 1) - (-10 x + 6)

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25x - 5

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2 years ago

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rewona [7]

Answer:

2.5

Step-by-step explanation:

(I'm assuming you're doing this the same way I learned it, if not I'm sorry if it doesn't make sense)

$\frac{2}{x}$ = $\frac{12}{15}$

Cross multiply

12x=30

Divide

x=2.5

This is just one way to do the problem. An easier way is to simplify the fractions.

$\frac{2}{x}$ = $\frac{4}{5}$

You can either cross multiply or figure out that 2 is half of four and simply divide 5 by 2 which will also result in 2.5

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2 years ago