За + 8 = 28
7а + 10b = 22 linear equation two variable
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Step-by-step explanation:
3a=28-8
3a=20
a=20/3
7(20/3)+10b=22
10b=22-140/3
10b=66/3-140/3
10b=-78/3
10b=-26
b=-26/10
b=-2.6
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