Question

130=143-0.65a
what is a?

Answer 1

answer choices
a 84
b 57
c 37
d 20

Answer 2

First thing you have to do is get the variable, a, by itself on one side

Answer 3

Do you know how to do that?

Answer 4

subtract 143 from both side ?

Answer 5

Yes that would be a good first step.

Answer 6

What would the equation look like after you do that?

Answer 7

-143+0.65 = -130

Answer 8

@sumanta did something different, he first multiplied each side by -1

Answer 9

But let's do it your way

Answer 10

so the it will be -13=-0.65a ?

Answer 11

Yes exactly. Any idea what to do next?

Answer 12

divide?

Answer 13

but how do i do that with negative numbers

Answer 14

Yes, by what

Answer 15

Divide by negative 0.65

Answer 16

Negative divided by negative is positive

Answer 17

so 20?

Answer 18

Great!

Answer 19

Love the username btw haha

Answer 20

Thanks (: and thanks cx lol