Question #062ed

1 Answer
Anthony R.
Jul 30, 2017

#v=4#

Explanation:

Simplify the right side first by distribution:

#126=-7(-15/4v-3)#

#126=color(red)(-7)(-15/4v)+color(red)(-7)(-3)#

#126=105/4v+21#

Subtract #21# from both sides:

#126-21=105/4v+cancel(21-21)#

#105=105/4v#

Multiply #4# to both sides:

#105*4=105/cancel4*cancel4v#

#420=105v#

Divide #105# to both sides:

#420/105=cancel105/cancel105v#

#4=v#

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