Question

x•9+8500=45000:10
c•7+5900=10000:10
a•8+7400=1000000:1000

Answer 1

1) X•9+8500=45000:10

9x+8500=45000:10

9x+8500=4500

9x+8500-8500=4500-8500

9x=-4000

9x:9=-4000:9

x=-4000:9

2) c•7+5900=10000:10

7c+5900=1000

7c=1000-5900

7c=-4900

c=-700

3) a•8+7400=1000000:1000

8a+7400=1000

8a=1000-7400

8a=-6400

a=-800