Mathematics, 03.02.2020 21:45, heyyyyy3922

You and three friends go out for dinner. the bill comes to $77. if you pay $20 and your three friends all ordered the exact same thing, what amount will each of your friends have to pay? i used f as the variable to express how much the friends have to pay. all i need is the 2 step equation i would write to solve it. . : )

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You and three friends go out for dinner. the bill comes to $77. if you pay $20 and your three friend...