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8-6 = 4b
2 = 4b
1/2=b
2. m+2 = 2m-4
2+4 = 2m-m
6 = m
semoga membantu
1. –4b=–8+6
–4b=–2
b = 1/2
2. m-2m = –2–4
–m = –6
m= 6