Question

resolva as equações ​

Answer 1

a)3×-1/5=4

3×-1=4.5

3×-1=20

3×=20+1

3×=21

×=21/3

×=7

b)×+9/9=1

×+9=1.9

×=9-9

×=0

c)4×+3/5=-1

4×+3=-1.5

4×+3=-5

4×=-5+3

4×=-2

×=-2/4

×=-1/2

d)8×-5/2=9

8×-5=9.2

8×=18+5

8×=23

×=23/8