4v-7+8v+4-5 - add the like terms
=12v-8
12v and 8 cannot be subtracted because they are not like terms. Like terms have the same variable.
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4/4*5*7 = 1*5*7 = 5*7 = 35
It is 5*7*4 = 140
7 * (5 + 3) - 4 = 7*8 - 4 = 56 - 4 = 527 * (5 + 3) - 4 = 7*8 - 4 = 56 - 4 = 527 * (5 + 3) - 4 = 7*8 - 4 = 56 - 4 = 527 * (5 + 3) - 4 = 7*8 - 4 = 56 - 4 = 52
(-5)*(-4) / [(-7) + 2] = (-5)*(-4)/(-5) = (-4) or -4.
4 5/7