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I am trying to teach myself math using the big fat notebook series, and it’s been going well so far. Today however I ran into these two problems that have me completely stumped. The book shows the answers, but doesn’t show step by step how to get there,and it’s driving me CRAZY. I cannot figure out how to get y by itself in either of the top/ blue equations.
In problem 3 I can subtract X from both sides and get 2y = -x 0, and can’t do anything else.
In problem 4 I can add 4x to both sides and get 3y = 4x 6 and then I’m stuck because I cannot get y by itself unless I divide by 3 and 4x is not divisible by 3.
Both the green equations were easy, but I have no idea how to solve the blue halves so I can graph them. Any help would be appreciated.
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