Как решить уравнение 87÷(4x+5)=3 17×(3x-16)=85 9×(6x-13)=153 3×(8x+51)=201 (46x-57)÷3=27...

Question

Как решить уравнение 87÷(4x+5)=3 17×(3x-16)=85 9×(6x-13)=153 3×(8x+51)=201 (46x-57)÷3=27 (19x+62)÷15=13

Comments

А еще 3?

Answer 1

1) 3(4х+5) = 87
12х+15=87
12х=87-15
12х=72
х=72:12=6
2) 3х-16=85:17
3х-16=5
3х=5+16
3х=21
х=21:3=7
3) 6х-13=153:9
6х-13=17
6х=17+13
6х=30
х=30:6=5

Comments

8х+51=201:3 8х+51=67 8х=67-51 8х=16 х=16:8=2

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46х-57=27*3 46х-57=81 46х=81+57 46х=138 х=138:46=3

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19х+62=13*15 19х+62=195 19х=195-62 19х=133 х=133:19=7

Answer 2

17×(3x-16)=85
3х-16=5
3х=5+16
3х=21
х=7

Comments

9×(6x-13)=153

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6х-13=17, 6х=17+13, 6х=30, х=5

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3×(8x+51)=201, 8х+51=67, 8х=67-51=16, х=2