3 years ago

Someone please help me!!!!!!!

Mathematics

2 answers:

Usimov [2.4K]3 years ago

5 0

Step-by-step explanation:

In the second step while opening the bracket, instead of 'a', there should be - 4a.

pochemuha3 years ago

3 0

Answer:

From Step 2 every step is wrong

Step-by-step explanation:

Ste p 1 : 3a - 5b = 12 - 4(b + a)

Step 2 : 3a - 5b = 12 - 4b - 4a [ Last term instead - 4a she\he wrote + a ]

Step 3 : 7a - 5b = 12 - 4b

Step 4 : 7a = 12 + b

$Step 5 : a = \frac{12 + b}{7}$

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irina1246 [14]

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Step-by-step explanation:

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Answer:

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