Answer:
x=1
Step-by-step explanation:
3(x)+1 substitute 1 in for x
3(1)+1=4
10(x)-6 substitute 1 in for x
10(1)-6=4
4=4
(sorry if that doesn't make any sense)
3x+1=10x-6
3x+7=10x
7=7x
1=x
-7
-20 × -7 = 140
140 × -7 = -980
5 people will be left to play
