Question

If 7x + 3y = 10 then what is the value of 3x?

Answer 1

well start by making x the subject

subtract 3y from both sides of the equation.

next divide both sides by 7

this will give the value of x

to find 3x.... multiply both sides by 3

Answer 2

yes it is sufficient information

so what happens when you subtract 3y from both sides of the equation?

Answer 3

i didnt get d ans

Answer 4

we haven't gotten to the answer... just working through the process to get the answer...

so what happens to the equation when you subtract 3y from both sides of the equation?

Answer 5

\[7x+3y=10\]\[x=\frac{ 10-3y }{7 }\] for (3x) multiply both the sides by 3\[\frac{ 3(10-3y) }{ 7}\]