Question

preciso responder essa 7×+15=10×-45

Answer 1

7x+15-10x-45=0
-3x-30=0
-3x= 30
x= 30/3
x= 10

Answer 2

7x+15=10x-45

-10x+7x=-45-15

-3x=-60 (x-1)

3x=60

x=60/3

x=20