Question

x+3 é igual á 10/// 2x+5=15/// 3x+2=18/// 5x+9=46/// 8x+2x-4=50/// 9x+5x+10=100/// 7x+5x-50=200 /// ME AJUDEM!!!

Answer 1

x + 3 = 10
x = 10 - 3
x = 7
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2x + 5 = 15
2x = 15 - 5
2x = 10
x = 10/2
x = 5
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3x + 2 = 18
3x = 18 - 2
3x = 16
x = 16/3
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5x + 9 = 46
5x = 46 - 9
5x = 37
x = 37/5
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8x + 2x - 4 = 50
10 x = 50 + 4
10x = 54 (:2)
5x = 27
x = 27/5
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9x + 5x + 10 = 100
14x = 100 - 10
14x = 90 (:2)
7x = 45
x = 45/7
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7x + 5x - 50 = 200 
12x - 50 = 200
12x = 200 + 50
12x = 250 (: 2)
6x = 125
x = 125/6
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