Question

How many solutions does the following equation have? -2z+10+7z=16z+7

Answer 1

Start with

$-2z+10+7z=16z+7$

Simplify the left hand side by summing like terms (the one involving z):

$5z+10 = 16z+7$

Subtract 5z from both sides:

$10 = 11z+7$

Subtract 7 from both sides

$3 = 11z$

Divide both sides by 11:

$z = \dfrac{3}{11}$

Answer 2

Answer:  Exactly one solution

Step-by-step explanation:

How many solutions does the following equation have?

-2z+10+7z=16z+7−2z+10+7z=16z+7