Question 207211
1)
x+.5x+3=30
1.5x=27
x=18
.5x+3=12
2)
2(2x+6)+x=38
4x+12+x=38
5x=26
x=5.2
base=5.2
2 sides = 16.4 each
16.4+16.4+5.2=38
3)
2x+2(3x)=40
2x+6x=40
8x=40
x=5
proof
10+30=40