The number beside the letter . for example 6x, 6 would be the variable
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Answer:
SORRY I don't know second number . I did only first .
53= -19z+5+7z
53= -12z+5 (combine -19z and 7z)
48= -12z. ( subract 5 on both sides)
-4=z. (divide by -12 both sides)