+0

# Aops

0
88
1
+119

Find the ordered pair that solves the system $$(u,v)$$

$${ u = -7 -2v {3u = 4v - 25}$$

Oct 29, 2018

#1
+3561
+1

$$u = -7 - 2v\\ 3u = 4v - 25 \\ 3(-7-2v)=4v-25\\ -21-6v=4v-25\\ 4=10v \\ v=\dfrac 2 5 \\ u = -7 - 2\left(\dfrac 2 5\right) = -\dfrac{39}{5}$$

.
Oct 29, 2018