Question

[Phạm Thị Minh Phượng]

m, 2(x-51)=2.2^3+20

n, 450:(x-19)=50

o, 4(x-3)=7^2-1^10

p, 135-5(x+4)=35

q, 25+3(x-8)=106

r, 3^2(x+4)-5^2=5.2^2

MAI MK PHẢI NỘP , GIÚP MK NHÉ CÁC BẠN ƠI

Answer 1

[Phạm Thị Hải Chi]

m, 2(x-51)=2.2^3+20

2(x-51)=2.6+20

2(x-51)=32

x-51=32:2

x-51=16

x =16+51

x =67

n, 450:(x-19)=50

x-19 =450:50

x-19 =9

x =9+19

x =28

o, 4(x-3)=7^2-1^10

4(x-3)=49-1

4(x-3)=48

x-3 =48:4

x-3 =12

x =12+3

x =15

p, 135-5(x+4)=35

5(x+4) =135-35

5(x+4) =100

x+4 =100:5

x+4 =20

x =20-4

x =16

q, 25+3(x-8)=106

3(x-8) =106-25

3(x-8) =81

x-8 =81:3

x-8 =27

x =27+8

x =35

r, 3^2(x+4)-5^2=5.2^2

9(x+4)-25=20

9(x+4) =20+25

9(x+4) =45

x+4 = 45:9

x+4 =5

x =5-4

x =1

Answer 2

[Le Tran Bach Kha]

p, 135 - 5(x+4) = 35

⇒ 5(x+4) = 135 - 35

⇒ 5(x+4) = 100

x + 4 = 100 : 5

x + 4 = 20

x = 20 - 4

x = 16

Vậy : x=16