(4.5y +9)-(6.2-3.1y)= 7.2y+2.8

0

Step-by-step explanation:

(4.5y+9)-(6.2-3.1y)=7.2y+2.8

4.5y+9-6.2+3.1y=7.2y+2.8

4.5y+3.1y+9-6.2=7.2y+2.8

7.6y+2.8=7.2y+2.8

7.6y-7.2y=2.8-2.8

0.4y/0.4=0/0.4

y=0

I hope this helps

y=0

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable

1. Open the brackets

problem: 4.5y + 9 - 6.2 + 3.1y= 7.2y + 2.8

2. Combine like terms/solve for y

problem: 7.2y-4.5y-3.1y=-0.4y

-0.4y=9- 6.2 - 2.8=0

3. Solve/algebra

-0.4y=0

*-0.4 divided by zero is 0, (anything divided by 0 is 0!)

y=0

Cheers! Hope you understand this.

answer: the first graph

step-by-step explanation: