9) (1 - 6x) + (7x + 3)10) (-4x + 4) – (8x + 7)11) (-x - 3) + (3x + 8)12) (7 + a)-(-7a + 1)14) (-3k - 1) + (7 + 2k)

Mathematics

1 answer:

seraphim [82]1 year ago

6 0

We solve as follows:

$(1-6x)+(7x+3)=x+4$ $(-4x+4)-(8x+7)=-12x-3$ $(-x-3)+(3x+8)=2x+5$ $(7+a)-(-7a+1)=8a+6$ $(-3k-1)+(7+2k)=-k+6$

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