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

Question

campbell_st · Answer

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

campbell_st · Answer

yes it is sufficient information 

so what happens when you subtract 3y from both sides of the equation?

anonymous · Answer

i didnt get d ans

campbell_st · Answer

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?

anonymous · Answer

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