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Plzzz Help with number 139 don’t understand
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Plzzz Help with number 139 don’t understand

Plzzz Help with number 139 don’t understand-example-1
User GeeMack
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1 Answer

3 votes

2a + 2s = 32, 6a + 7s = 106

Solve for a in the first equation.

2a = 32 - 2s

a = 16 - s

Substitute a into the second equation.

6(16 - s) + 7s = 106

96 - 6s + 7s = 106

96 + s = 106

s = 10

Substitute s into the first equation.

2a + 2(10) = 32

2a + 20 = 32

2a = 12

a = 6

a = 6, s = 10

User Tom El Safadi
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5.2k points
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