Question

g) 5x + 4 = 2x + 40
h) 10y - 2y = 72
i) 4a + 2a = a + 25​


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Answer 1

g) 5x + 4 = 2x + 40

= 5x - 2x = 40 - 4

= 3x = 36

= x = 36/3

= x = 12

h) 10y - 2y = 72

= 8y = 72

= y = 72/8

= y = 9

i) 4a + 2a = a + 25

= 6a = a + 25

= 6a - a = 25

= 5a = 25

= a = 25/5

= a = 5