bello1248 bello1248

09-01-2022
Mathematics

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Method of substitution a+3b=5 and 7a-8b=6

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icuberlsa icuberlsa

09-01-2022

Answer: b=1, a=2

Step-by-step explanation: a=5-3b, so plug (5-3b) into a for the second equation for 7(5-3b)-8b=6 so 35-29b=6 so 29=29b so b=1, then plug b=1 into any equation to solve for a, so a+3(1)=5, so a=2. Hope this helps!

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