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a) - ( 3x + 8y ) + ( 4x - 5 )= b) 3x + 2a - ( 4 -5x ) + 7 =
c) ( 5x - 7 ) - ( -x+8)=
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a) -(3x+8y)+(4x-5)=-3x-8y+4x-5=x-8y-5
b)3x+2a-(4-5x)+7=5x-4+5x+7=8x+2a+3
c)(5x-7)-(-x+8)=5x-7+x-8=6x-15
a.)-(3x + 8y ) + (4x - 5 ) = -3x - 8y + 4x - 5 = 1x - 8y - 5 = x -8y -5
b.) 3x + 2a - (a-5x) + 7 = 3x -2a -a +5x + 7 =8x -3a + 7
c.) (5x - 7 ) - (-x+8 ) =5x - 7 + x -8 = 6x +1