Answer:
q = 1; r = 2; s = 3; t = 4; x = 5; y = 6
7. 2(x+4) + 10 = 2(5+4)+10 = 2*9+10=18+10=28
8. 3(4x) + 4 = 3(4*5)+4 =3(20)+4 = 60+4 = 64
9. 10(xy) = 10(5*6) = 10(30) = 300
10. 2(x + y) = 2(5+6) = 2(11) = 22
11. 3(rs) + 4(x) = 3(2*3)+4(5) = 3(6)+20=18+20=38
12. 2(q) + 2(x + t) = 2(1)+2(5+4) = 2+2(9) = 2+18=20
13. 6(3t + 4s) = 6(3*4 + 4*3)=6(12+12) = 6*24 = 144
14. 10(10x) + 10y = 10(10*5)+10*6 = 10(50)+60=560
15. x(xy) = 5(5*6)=5*30=150
16. r(s)(t) =2*3*4=6*4=24
17. (r)(s)(t)(x)(y) =2*3*4*5*6=24*30=720
18. 6(2x + 3Y) =6(2*5+3*6)=6(10+18)=6(28)=168
Answer:
7. 2(5 +4)+10
= 2(9) +10
= 18+10
= 28 answer
8. 3(4x) + 4
= 3(4x5)+4
=3(20)+4
=60+4
=64
9. 10(xy)
=10(5x6)
=10(30)
=300
10. 2(x + y)
=2(5+6)
=2(9)
=18
11. 3(rs) + 4(x)
=3(2x3)+4(5)
=3(6)+20
=18+20
=38
12. 2(q) + 2(x + t) =
=2(1)+2(5+4)
=2+2(9)
=2+18
=20
13. 6(3t + 4s)
=6(3x4+4x3)
=6(12+12)
=6(24)
=144
14. 10(10x) + 10y
=10(10x5)+10x6
=10(50)+60
=500+60
=560
15. x(xy)
=5(5x6)
=5(30)
=150
16. r(s)(t)
=2(3)x(4)
=6x(4)
=24
17. (r)(s)(t)(x)(y)
=(2)x(3)x(4)x(5)x)6)
=6x20x(6)
=120x6
=720
18. 6(2x + 3Y)
=6(2x5+3x6)
=6(10+18)
=6(28)
=168
hope it helps u :)
