Решите уравнения:
а) –2 (3х + 4) + (6х + 8) = 4 (5х – 2) – (5х + 8)
б) 8 (4 – 3у) – (7 – 2у) = – (6 + 3у) + 8 (у – 2)
а) –2 (3х + 4) + (6х + 8) = 4 (5х – 2) – (5х + 8)
б) 8 (4 – 3у) – (7 – 2у) = – (6 + 3у) + 8 (у – 2)
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20х-5х-8-8=0
15х-16=0
15х=16
х=1 1/15
б) 32-24у-7+2у=-6-3у+8у-16
25-22у=-22+5у
-22у-5у=-22-25
-27у=-47
у=47/27=2 1/9