Toán Lớp 7: Tìm x
a.48+(5x-10)-[4x-(-11)]=120
b.3.(x-10)-(2x+15)=-90
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Toán Lớp 7: Tìm x
a.48+(5x-10)-[4x-(-11)]=120
b.3.(x-10)-(2x+15)=-90
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