\(2019+2019+2019+2019+2019x7-2019\)
\(=2019x\left(7+4-1\right)\)
\(=2019x10=20190\)
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\(2019+2019+2019+2019+2019\times7-2019\\ =2019\times4+2019\times7-2019\times1\\ =2019\times\left(7+4-1\right)=2019\times10=20190\)
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= 10095 x 7 - 2019
= 70665 - 2019
= 68646
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2019+2019+2019+2019+2019.7-2019
=2019+2019+2019+2019+14133-2019
= 8076 +14133-2019
= 22209-2019
=20190
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