leonarddyer4599
17.07.2019 •
Mathematics
Solve: 7 +42-32-32 = 14.3-2a +7
a = -3
a= 0
a= 3
no solution
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Ответ:
a = 18.15
Step-by-step explanation:
Combine like terms on the left side of the equation first. Add 7 and 42, then subtract 32 from the answer you get, then subtract 32 from that answer. This is going by order of PEMDAS.
Remember PEMDAS: (numbers 3 & 4 and numbers 5 & 6 are solved from left to right)
ParenthesesExponentsMultiplicationDivisionAdditionSubtractionAfter combining like terms on the left side, you get -15. Now combine like terms on the right side of the equation by adding 14.3 and 7.
Get -2a alone by subtracting 21.3 from both sides.
Divide both sides by -2.
In this equation, a should equal .
Ответ: