9^4.5×7^2.8×63^4×9^2.5×7^4.2=63^x
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Answered by
1
Answer:
x=11
Step-by-step explanation:
9^4.5×9^2.5×7^2.8×7^4.2×63^5=63^x
=>9^(4.5+2.5)×7^(4.2+2.8)×63^4=63^x
=>9^7×7^7×63^4=63^x
=>63^7^63^4=63^x
=>63^11=63^x
=>x=11
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