(1.) solve for x. show all work: -2x + 5 = 4x - 7 (2.) solve for y. show all work: 12y + 4 = 8y - 12 (3.) solve for z. show all work: 7z - 18 = -2z + 18 (4.) solve for x. show all work: 10x + 15 = 5x - 10

The answers are:

1

2

3

4

Solving for each of the given equations and variable, we have:

Solving for "x", we have:

So, we have that:

Solving for "y", we have:

So, we have that:

Solving for "z", we have:

So, we have that:

Solving for "x", we have:

So, we have that:

Hence, the answers are:

1

2

3

4

Have a nice day!

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

i would say b) is your answer

sorry if im wrong

step-by-step explanation: