How to solve this? 0.5x+y=1.5 and 0.8x-0.2y=6

Question

How to solve this?
0.5x+y=1.5 and 0.8x-0.2y=6

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Julia 3 months 2022-02-19T01:39:04+00:00 1 Answer 0 views 0

Answers ( )

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    2022-02-19T01:40:59+00:00

    Step-by-step explanation:

    Step 1 : 0.5x + y = 1.5

                0.8x – 0.2y =6

    Step 2 : y = 1.5 – 0.5x

                 0.8x – 0.2 ( 1.5 – 0.5x ) = 6

    Step 3 : y = 1.5 – 0.5x

                0.8x – 0.3 + 0.1x = 6

    Step 4 : y = 1.5 – 0.5x

                0.9x = 6.3

    Step 5 : y = 1.5 – 0.5* 7

                 x = 7 ( put 7 into the x value above )

    Ans: y = -2

            x = 7

    You can ask me if you don’t understand any step^^

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45:7+7-4:2-5:5*4+35:2 =? ( )