3 years ago

5x+3x=5x+15/2 what value 3x make the equation true

2 answers:

andrey2020 [161]3 years ago

4 0

Subtract 5x from both sides. You'll get 3x=15/2
Turn 15/2 into a mixed number. 7 1/2
Divide 3 both sides.
Answer: 2 1/2

Check your work.

5*2 1/2 =12.5 3*2 1/2= 7.5
Therefore 12.5+7.5=12.5+7.5
12.5+7.5=20
Therefore the answer is 2.5 or 2 1/2

Dovator [93]3 years ago

4 0

We need to get the 3x alone so
5X+3X=5X+15÷2
(÷5x)3X=5X+7.5(÷5X)
(÷3)X=7.5(÷3)
X=7.5÷3
X=2.s<u />

You might be interested in

If a rectangular field is 27 meters long and 18 meters wide , if fencing costs $12 per yard how much will it cost to enclose the

melomori [17]

bearing in mind that 1 yard = 0.914 meters, so therefore 27 meters is then 27/0.914 yards and 18 meters is 18/0.914 yards

$\bf \stackrel{27~meters}{\cfrac{27}{0.914}yd}\cdot \stackrel{18~meters}{\cfrac{18}{0.914}yd}\qquad \approx\qquad 581.76~yd^2 \\\\\\ \stackrel{\textit{total price}}{(581.76)(12)}\implies 6981.12$