Question

3a+8b=28 7a+10b =22 linear equations ​

Answer 1

Step-by-step explanation:

3a+8b=28

a=28-8b/3

put a=28-8b/3 in 7a+10b=22

thus, 7(28-8b/3)+10b =22

196-56b+30b=66

130=26b

5=b

hence, a= - 4

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Answer 2

Answer:

3a+8b=28

7a+10b=22

10a+18b=50

18b=50-10a