Question

matemática,equações ajuda ​

Answer 1

a) x - 3 = 7

x=7+3 = 10

b) x+4=10

x= 10-4 =6

c) x+101= 300

x= 300-101 =199

d) x-279= 237

x= 237+ 279 =516

e) x-8= -10

x= -10+8 = -2

f) 3(x+2)= 15

x+2 = 15/3

x+2= 5

x=5-2 = 3

g) 3x=12

x=12/3 =4

h) 9x=18

x=18/9 = 2

i) 35x= -105

x= -105/35 = -3

j) 7x-1= 13

7x= 13+1

7x=14

x=14/7= 2

k) 6x-10= 2x+14

6x-2x = 14+10

4x = 24

x= 24/4= 6