Begin by writing it down:
-5a + 6 = 56
Subtract 6 from each side:
-5a = 50
Divide each side by 5:
-a = 10
Multiply each side by -1 :
a = -10
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6a + 4 = 5a - 2 means that 6a - 5a = -2 - 4 which gives a = -6
2x+a=p 2x=p-a x=.5p-.5a
5a + 2 = 7 subtract 2 from both sides: 5a = 5 divide both sides by 5: a = 1
-59
2a+5a+9a = 16a