Question

срочно помогите номер 2,3,4

Answer 1

3)
1. =2a+2b
2.=15-5b
3.=42mn+48mp
4)
a=7 
b=28/7=4
P=7*2+4*2=14+8=22

Answer 2

#2
1) 3•16 + (а + b) = 48 + (a + b)
2) 9•5•4 + (m+n+k) = 45•4 + (m+n+k) = 180 + (m+n+k)
3)50•2•8•7 + (a+b+c+d) = 11,200 + (a+b+c+d)