Question

a)1-2(a-1)=a
B)1-3(×-5)=×-1
C)1-(2×-3)+(×-5)=2
D)7(a-3)=a+5
E)4(a-2)=5a
F)2-(×-3)=6×
G)2+3(×-4)-2(×-5)=0,3

Answer 1

a) 1-2a+2=a

3=3a
a=3/3
a=1

b)1-3x+15 = x-1
17=4x
x=17/4
x= 4.25

c) 1-2x+3+x-5=2
-1-x=2
-x= 3 (-1)
x= -3

d)7a-21=a+5
6a= 26
a=26/6
a= 4.333....

e)4a-8=5a
-8=a
a=-8

f)2-x+3=6x
5=7x
x= 5/7
x=0,7142857142

g)2+3x-12-2x+10=0,3
x=0,3