Найдите сумму корней уравнений:
1.3х=-7.8 и (1.8х+3.7)-1,4=6.3+5.9

1)1.3х=7.8  х=7.8:1.3  х=62)(1.8х+3.7)-1.4=6.3+5.91.8х+3.7-1.4=6.3+5.91.8х=6.3+5.9-3.7+1.41.8х=9.9   х=9.9:1.8   х=5.5