D.2y+3 i think is the answer

---------------------------------------------------------
Answer:
x=3 and y=2
Step-by-step explanation:
1.) 4x+3(5x-13)=18
expand into 4x+15x-39=18
18+39= 57
15x+4x= 19x
57/19= 3 so x=3
substitute 3 into y= 5x - 13
and you get 2 so y=2
Answer:
times 5/4
Step-by-step explanation:
7 x = 35/4
x = (35/4) / 7
x = (35/4) x (1/7)
x = 35/28
x = 5/4
You multiply the whole number and the <span>denominator ( the bottom number in the fraction) and then add the answer of that to the numerator. Hope that helps! :) </span>