3(-2) -(1) -3(-2)
= -6 -1 +6 = -1
<span>Using the information we have
3x+4=40
Do the same to each side of the equation to eliminate for x.
3x+4=40 Minus 4 from each side
3x=40-4
3x=36
Divide 3 from each side
x=36/3
x=12
AC=3x+4
insert the value of x
3(12)+4=40
AC=40
AD=20</span>
38.8 is the answer. Using pemdas you should find work leading to that
X is equal to about 3.218876
