Question

What is y if the equation is 2x+5y=8

Answer 1

Answer:

y= −2/5x+8/5

Step-by-step explanation:

Step 1: Add -2x to both sides.

2x+5y+−2x=8+−2x

5y=−2x+8

Step 2: Divide both sides by 5.

5y/5=−2x+8/5

y=−2/5x+8/5

Answer 2

Answer:

$\large\boxed{y=\dfrac{8-2x}{5}=\dfrac{8}{5}-\dfrac{2}{5}x=1.6-0.4x}$

Step-by-step explanation:

$2x+5y=8\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\2x-2x+5y=8-2x\\\\5y=8-2x\qquad\text{divide both sides by 5}\\\\\dfrac{5y}{5}=\dfrac{8-2x}{5}\\\\y=\dfrac{8-2x}{5}=\dfrac{8}{5}-\dfrac{2}{5}x=1.6-0.4x$