Question

Kl.6
rozwiąż równania :
2a-3=a+1
4b+3=3b-4
7+3c=-5+2
5d+2=3d
6e-2=7e+5
6f-1=f+2
to dział równania i nierówności ;d
to na jutro (17 maja) proszę szybko oczywiście daje naj

Answer 1

2a-3=a+1 <=> 2a-a=1+3 <=> a=4
4b+3=3b-4 <=> 4b-3b=-4-3 <=> b=-7
7+3c=-5+2 <=> 3c=-5+2-7 <=> 3c=-10 <=> c=-10/3
5d+2=3d <=> 5d-3d=-2 <=> 2d=-2 <=> d=-1
6e-2=7e+5 <=> 6e-7e=5+2 <=> -e=7 <=> e=-7
6f-1=f+2 <=> 6f-f=2+1 <=> 5f=3 <=> f=3/5

Answer 2

2a-3=a+1
2a-a=1+3
a=4

4b+3=3b-4
4b-3b=-4-3
b=-7

7+3c=-5+2
7+3c=-3
3c=-3-7
3c=-10
c=-10/3

5d+2=3d
5d-3d=-2
2d=-2
d=-1

6e-2=7e+5
6e-7e=5+2
-e=7
e=-7

6f-1=f+2
6f-f=2+1
5f=3
f=3/5

Answer 3

2a-3= a+1
2a-a=1+3
3a=4 /:3
a=4/3
4b+3=3b-4
b=-7
7+3c=-5+2
3c=-5+2-7
3c=-10 /:3
c= -10/3
5d+2=3d
2=3d-5d
2=-2d /:-2
d=1
6e-2=7e+5
-1e=7 /:-1
e= -7
6f-1=f+2
5f=3 /:5
f=3/5