math,help

can someone help me with this i am lost now i've been doing math for the past 8 hrs.

Problem # 1

solve: 4(x-10)-3x=x-40

Problem # 2

solve for t:

a = p + prt

Problem#3

translate to an algebraic equation

7 less than the quotient of a number and 3 is twice the same number

problem one cannot be solved.

a-p= prt divdie both sides by pr.

three; n/3 - 7 = 2n

can you show me the number 2

a=p + prt

i don't see what you mean....

a-p=prt

a-p/rt = t
do i leave it like this is this what you mean

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