Answer:
75
Step-by-step explanation:
A streight line has an angle of 180 so if you take 180 and subtract 105 you get 75
So
sum means add
[3 times (x+4)]+[7 times (x+13)]
distribute
a(b+c)=ab+ac
3(x+4)=3x+12
7(x+13)=7x+13
now we have
3x+12+7x+13
add lk etmers
10x+25
Since:
ax(2x + y - 5) = 6x^2 +3xy - 15x,
we should factor X out of the second equation to find out the value of a:
6x^2 + 3xy - 15x =
x(6x + 3y - 15),
Now that we factored X out, to find a, we need to find the other common factor:
(6x + 3y - 15) / (2x + y - 5),
which is 3.
Hence the value of a is 3
A
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