3 x + 5 4 = 10 7 3 x = 10 7 − 5 4 3 x = 10 7 − 10 8 3 x = − 10 1 / : 3 x = − 10 1 ⋅ 3 1 x = − 30 1
5 3 x + 4 = 10 7 10 ( 3 x + 4 ) = 5 ⋅ 7 30 x + 40 = 35 30 x = 35 − 40 30 x = − 5 / : 30 x = − 30 5 x = − 6 1
3 x + 5 4 = 10 7 ∣ − 5 4 3 x + 5 4 − 5 4 = 10 7 − 5 4 3 x = 10 7 − 10 8 3 x = − 10 1 / ∗ 3 1 x = − 30 1
or 5 3 x + 4 = 10 7 / ∗ 10 2 ( 3 x + 4 ) = 7 6 x + 8 = 7 ∣ − 8
6 x + 8 − 8 = 7 − 8 6 x = − 1 / : 6 x = − 6 1
To solve the equation 3 x + 5 4 = 10 7 , first isolate x by subtracting 5 4 from both sides and simplifying the fractions. Finally, divide by 3 to get x = − 30 1 .
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