(6X+(-15X))+(4X+(-10))
6X-15X+4X-10
-5X-10
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(6X+(-15X))+(4X+(-10))
6X-15X+4X-10
-5X-10
X+4=3
X+4-4=2-4
X =-1
BUKTI
X+4=3
-1+4=3
MAAF YA cuma no 4 ^_^
maaf saya msih tahap belajar kk