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7-4=x+2x
3=3x
3/3= x
2) 3x-7=5x
3x-5x=7
-2x=7
x=7/-2
3) 2x+16=x-25
2x-x=-25-16
x=41
-2x+x = 4 - 7
-x = -3
x = 3
2. 3X-7=5X
3x - 5x = 7
-2x = 7
x = 7/-2
3. 2X+16=X-25
2x - x = -25 - 16
x = -41
semoga membantu:)