Question

Реши уравнения)
2(11-5)-17х=55
5(8х+3)-12=83
7(2х+9)+3х=114
3(4х+13)-25=74

Answer 1

5(8х+3)-12=83
40x+15-12=83
40x=83-15+12
40x=80
x=80:40
x=2
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7(2х+9)+3х=114
14x+63+3x=114
17x=114-63
17x=51
x=51:17
x=3
========
3(4х+13)-25=74
12x+39-25=74
12x=74-39++25
12x=60
x=60:12
x=5
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2(11x-5)-17х=55
22x-10-17x=55
5x-10=55
5x=55+10
5x=65
x=65:5
x=13