What number is 25% of 64....
x = 0.25(64)
x = 16 <=== ur solution
7x+5y=-24 (1)
4x+y=42 (2)
multiply equation (2) by 5 to get
20x+5y=210 (3)
then calculate (3)-(2) which gives you
13x=234 hence x=18
then substitute for x in either equation to get y=-30
12x+30+4
12x+34
This is 12x + 34 because when we combine all like terms, we get it.