4x+20 = 3x - 28
x + 20 = -28
x = - 48
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h t t p s : / / w w w . y o u t u b e . c o m / w a t c h ? v = Y B u y R P r W 6 Q g & t = 1 0 s
Answer:
C.
Step-by-step explanation:
Answer:
Step-by-step explanation:
remember plus minus = minus
so 8+-=9
8-9=-1