Question

A) 11x+10=2x+37 b) 12x+6=9x+12 c) 10x+16=3x+2 d)13x+30=21x+14 e) 5x-12=4+4x f) 9x-8=3x+2 i jeszcze prosze o sprawdzenie =)

Answer 1

A) 11x+10=2x+37
9x=27 /9
x=3

b) 12x+6=9x+12
3x=6 /3
x=2

c) 10x+16=3x+2
7x=-14 /7
x=-2

d)13x+30=21x+14
-8x=16 /-8
x=-2

e) 5x-12=4+4x
x=16

f) 9x-8=3x+2
6x=10 /6
x=1 i 2/3

Answer 2

A) 11x+10=2x+37
11x-2x+37-10
9x=27 / :9
x= 3
b) 12x+6=9x+12
12x-9x=12-6
4x=6 / :4
x= 1½
c) 10x+16=3x+12
10x-3x=2-16
7x= -14/ :7
x= -2
d) 13x+30=21x+14
13x-21x=14-30
-8x= -16/ : (-8)
x= 2
e) 5x-12=4+4x
5x-4x=4+12
x= 16
f) 9x-8=3x+2
9x-3x=2+8
6x=10 / :6
x= 1 ⅔