Question

The equation the quantity 2x minus 10 divided by 4 = 3x models temperature change, where x represents the difference in degrees in the last 24 hours. Solve for x. x = −10 x = −1 x = 2 x = 11

Answer 1

Answer: x=-1

Explanation:

x=-1

because

2x - 10

over = 3x

4

we can put everything in parentheses and multiply by 4

2x - 10

4( over )= (3x) 4

4

The 4's on the left side will cancel out around and leave

2x - 10

on the right we multiply 3x x 4 which equals 12x

rewrite the equation

2x - 10 = 12x

subtract 2x on each side with the variable.

2x - 10 = 12x

-2x -2x

the 2x's on the left will cancel out.

on the right 12x - 2x equals 10x

now the equation is

-10=10x

but we are not done

divide 10 on each side

on the left -10/ 10 equals -1 because one number is negative and that does not give a postive result.

on the right 10x/ 10 the 10's cancel out leaving the varible x

we are left with

x=-1

Answer 2

I'm pretty sure it's -1 but correct me if I'm wrong