Question

rezolvati ecuatiile: a. 5x-3=27 b. 3x+5=26 c. x+9=3x d. 7-3x=4x e. 2(4x+7)-3(x+4)=4x+30​

Answer 1

Sper sa primesc coroana

Answer 2

Explicație pas cu pas:

a)5x-3=27

5x=27+3

5x=30

x=30÷5

x=6

5×6-3=27

b)3x+5=26

3x=26-5

3x=21

x=21÷3

x=7

3×7+5=26

c)x+9=3x

x=9-3

x=6

3x=6+9

3x=15

x=15÷3

x=5

6+9=3×5

d)7-3x=4x

3x=7-4

3x=3

x=3÷3

x=1

4x=7-3

4x=4

x=4÷4

x=1

7-3×1=4×1