5(4x – 2x) + 12 = 4x – 2
1 answer:
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Answer:
c = 3
Step-by-step explanation:
Using the rule of exponents
=
note that 32 = and 8 = 2³ , then
=
, becomes
=
=
Since the bases on both sides are equal, both 2, then equate the exponents
10c = 3c + 21 ( subtract 3c from both sides )
7c = 21 ( divide both sides by 7 )
c = 3
