3(x+7)+3(x+3)-4(x+3)
3x+21+3x+9-4x-12
2x+18 or 2(x+9)
7/20 = 0.35 = 35%=500x.35 =170 men
40%=.40x500 =200 women
200+170=370
500-370
130 children
Step-by-step explanation:
c+22=c+2
3+22=3+2
25=5 not true.
(-6)+22=(-6)+2
28=8 no true.
c+22=c+2
(-6)+22=3+2
28=5 ther is no equal
Solve using identities (x-y)² when opened becomes x²-2xy+y² now add second equation amd tou will get the ans